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 prayed in Ayasofya Camil (Mosque of Haghia Sophia) for the first time on a Thursday." is true, false, or inconclusive?