. . "a 6th century masterpiece of Byzantine architecture in Istanbul; built as a Christian church, converted to a mosque in 1453, and made into a museum in the middle of the 20th century"@en-us . . . . . . "Santa Sofia"@en-us . "Hagia Sophia"^^ . . . . "Hagia Sophia"@en-us . "Santa Sophia"@en-us . "0"^^ . "103475118"^^ . . "0"^^ . "Hagia Sofia"@en-us . . "03475118-n"^^ . .