Uighur girls attend a Koran class in a madrasa, or religious school, in Kayseri, Turkey, January 31, 2019. The madrasa that shelters 34 children, including eight who have lost at least one parent, in Kayseri, a central Anatolian city, has received Uighurs since the 1960s and today hosts the second largest population of Uighur exiles in Turkey. REUTERS/Murad Sezer SEARCH "SEZER NOURMUHAMMED" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.