Take the following as truth: His first act was to ride to Haghia Sophia and order that it be converted into a mosque; on the following Friday, he attended the first Muslim prayers in what came to be called Ayasofya Camii (Mosque of Haghia Sophia).
Then the following statement: "He  was the one who named the mosque Ayasofya Camil." is true, false, or inconclusive?