A nun walks into the Church of the Holy Sepulchre in Jerusalem's Old City, December 11, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A member of the Orthodox Christian clergy stands at the entrance door of the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A nun sits on a bench inside the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Members of the Orthodox Christian clergy disperse incense as they stand inside the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

His Beatitude Theophilos III, the Patriarch of Jerusalem, performs the "Washing of the Feet" ceremony outside the Church of the Holy Sepulchre in Jerusalem's Old City, April 5, 2018. REUTERS/Ammar Awad/File Photo SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

An Orthodox Christian priest holds a ladder near the entrance door of the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Crosses carved in the wall by pilgrims are seen beside stairs leading to the Crypt of St. Helena in the Church of the Holy Sepulchre in Jerusalem's Old City, March 27, 2018. REUTERS/Corinna Kern SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

His Beatitude Theophilos III, the Patriarch of Jerusalem, poses for a photograph at the Greek Orthodox Patriarchate in Jerusalem's Old City, March 14, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Members of the Orthodox Christian clergy talk in front of the Edicule, which houses what is traditionally believed to be the tomb of Jesus Christ, inside the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Artak Tadevosyan, 26, an Armenian Orthodox deacon, disperses incense inside the Church of the Holy Sepulchre in Jerusalem's Old City, November 17, 2018. REUTERS/Ammar Awad SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. 

People walk over the frozen up lake Eibsee in Grainau near Garmisch-Partenkirchen, Germany February 28, 2018. REUTERS/Michaela Rehle 

A dog walks in the snow on Clapham Common in London, Britain, February 28, 2018. REUTERS/Dylan Martinez 

A woman takes a walk over the frozen up lake Eibsee in Grainau near Garmisch-Partenkirchen, Germany February 28, 2018. REUTERS/Michaela Rehle 

A dog walks in the snow on Clapham Common in London, Britain, February 28, 2018. REUTERS/Dylan Martinez 

A dog walks through the snow on Clapham Common in London, Britain, February 28, 2018. REUTERS/Dylan Martinez 

Dogs chase each other in the snow on Clapham Common in London, Britain, February 28, 2018. REUTERS/Dylan Martinez 

A commuter climbs stairs during a morning snow fall in Lausanne, Switzerland December 18, 2017. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY 

A man's footsteps are seen in the snow in Thames Barrier Park, London, Britain, December 10, 2017. REUTERS/Steven Watt 

Grace Sutter Hodgins from Cleveland, Ohio poses for a portrait after her Canadian citizenship ceremony in Calgary, Alberta, Canada May 29, 2017. Hodgins said: "We bought property in British Columbia in 2011, raw land, and we've been building a house and making a homestead. I feel I'm carrying on my father's family legacy, because they immigrated to the States right after World War II and settled in northeast Ohio. So I feel like I'm sort of following those footsteps and striking out into a new country and starting a new life." REUTERS/Todd Korol SEARCH "CANADA FACES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

The footsteps of a man and woman with Turkish passports who crossed the U.S-Canada border in the frost into Surrey, British Columbia February 25, 2017. The two were later taken into custody by the Royal Canadian Mounted Police (RCMP) after being located. Picture taken February 25, 2017. REUTERS/Ben Nelms 

The footsteps of a man and woman with Turkish passports who crossed the U.S-Canada border in the frost into Surrey, British Columbia February 25, 2017. The two were later taken into custody by the Royal Canadian Mounted Police (RCMP) after being located. Picture taken February 25, 2017. REUTERS/Ben Nelms 

The footsteps of a man and woman with Turkish passports who crossed the U.S-Canada border in the frost into Surrey, British Columbia February 25, 2017. The two were later taken into custody by the Royal Canadian Mounted Police (RCMP) after being located. Picture taken February 25, 2017. REUTERS/Ben Nelms 

Footsteps in fresh snow are seen on the arena inside a bullring during a snowfall in downtown Ronda, near Malaga, Spain January 19, 2017. REUTERS/Jon Nazca 

A man walks amongst footsteps in the snow in Toronto, Canada December 11, 2016. REUTERS/Kevin Coombs 

People stand next to a footprint made by a meat-eating predator some 80 million years ago and one of the largest of its kind ever found, at the Maragua Syncline, Bolivia, July 20, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A silhouette of a replica dinosaur is seen at the Cretaceous park in Cal Orcko, Sucre. A footprint measuring over a meter wide that was made by a meat-eating predator some 80 million years ago has been discovered in Bolivia, one of the largest of its kind ever found. The print, which measures 1.2 meters (1.3 yards) across, probably belonged to the abelisaurus, a biped dinosaur that once roamed South America, said Argentine paleontologist Sebastian Apesteguia, who is studying the find. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY Matching text BOLIVIA-DINOSAUR/ 

Paleontologist Sebastian Apesteguia measures the footprint made by a meat-eating predator some 80 million years ago and one of the largest of its kind ever found, at the Maragua Syncline, Bolivia, July 21, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors look at dinosaur footprints while visiting with a tour guide the Cal Orcko cliff in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Paleontologist Sebastian Apesteguia touches a dinosaur's footprint at the Maragua Syncline, Bolivia, July 20, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors look at dinosaur footprints while visiting the Cal Orcko cliff in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A man walks next to dinosaur footprints at the Maragua Syncline, Bolivia, July 21, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors look at dinosaur footprints while visiting the Cal Orcko cliff in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors arrive at the Cal Orcko cliff which is covered with thousands of dinosaur's footprints in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Children play with the replica of a dinosaur fossil at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A child walks up a playground climber with dinosaur footprints at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A mother takes a photograph of her children while they pose in front of the replica of a Tyrannosaurus rex at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Children have a snack while sitting next to the replica of a Tyrannosaurus rex at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

The replica of a Titanosaur is seen at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors walk underneath a replica of a Titanosaur at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A visitor walks underneath a replica of a Titanosaur at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

The replica of a Titanosaur is seen at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Visitors walk underneath a replica of a Titanosaur at the Cretaceous park in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David Mercado SEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A view shows the area where a footprint measuring over a meter, made by a meat-eating predator some 80 million years ago, and one of the largest of its kind ever seen, was found in Maragua, Bolivia, July 21, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A truck unloads rocks next to the Cal Orko cliff where thousands of dinosaur's footprints can be seen, in Cal Orcko, on the outskirts of Sucre, Bolivia, July 22, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Paleontologist Sebastian Apesteguia measures the footprint made by a meat-eating predator some 80 million years ago and one of the largest of its kind ever found, at the Maragua Syncline, Bolivia, July 21, 2016. REUTERS/David MercadoSEARCH "BOLIVIA DINOSAUR" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Footsteps can be seen on a recently cleared sidewalk during a spring snow storm in Boston, Massachusetts April 4, 2016. REUTERS/Brian Snyder 

Baker Eulogio Pillco bakes traditional bread using an oven made of clay in the town of Pisac, Cusco, August 13, 2015. Pillco, who wears traditional Andean clothes, has been baking for 30 years, following in the footsteps of his father who taught him the craft. REUTERS/Pilar Olivares 

Philippine Senator Ferdinand Marcos Jr. (2nd R), is endorsed as a Vice-Presidential candidate in May 2016 national elections by his mother, former first lady Imelda Marcos, former president Joseph Estrada (2nd L) and Senator Juan Ponce Enrile (R) during a political rally in Manila October 10, 2015. Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Janis C. Alano 

Philippine Senator Ferdinand Marcos Jr waits at the back stage before announcing his Vice-Presidential bid for May 2016 national elections during a political rally in Manila October 10, 2015. Former First Lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Former Philippine first lady Imelda Marcos blows a kiss to supporters after her son Senator Ferdinand Marcos Jr announced his Vice-Presidential bid during a political rally in Manila October 10, 2015. Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Supporters chant slogans as Senator Ferdinand Marcos Jr, son of late dictator President Marcos, announced his Vice-Presidential bid during a political rally in Manila October 10, 2015. Former Philippine first lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Philippine Senator Ferdinand Marcos Jr flashes "V" sign after announcing his Vice-Presidential bid for May 2016 national elections during a political rally in Manila October 10, 2015. Former Philippine first lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. At the back are Ferdinand Jr's family. REUTERS/Janis C. Alano 

Philippine Senator Ferdinand Marcos Jr announces his Vice-Presidential bid for May 2016 national elections during a political rally in Manila October 10, 2015. Former Philippine First Lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Janis C. Alano 

Philippine Senator Ferdinand Marcos Jr announces his Vice-Presidential bid for May 2016 national election during a political rally in Manila October 10, 2015. Former Philippine first lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Former Philippine first lady Imelda Marcos (L) and her son Senator Ferdinand Marcos Jr (R) wave to supporters after Ferdinand Jr announced his Vice-Presidential bid during a political rally in Manila October 10, 2015. Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Supporters chant slogans as Senator Ferdinand Marcos Jr, son of late dictator President Marcos, announced his Vice-Presidential bid during a political rally in Manila October 10, 2015. Former Philippine first lady Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Philippine Senator Ferdinand Marcos Jr greets supporters before announcing his Vice-Presidential bid during a political rally in Manila October 10, 2015. Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro 

Former Philippine first lady Imelda Marcos blows a kiss to supporters after her son Senator Ferdinand Marcos Jr announced his Vice-Presidential bid during a political rally in Manila October 10, 2015. Imelda Marcos is disappointed that her son has set his sights on winning the vice presidency in a May election, wishing instead he would follow his late father's footsteps into the presidential palace. REUTERS/Erik De Castro