Take the following as truth: As you leave by the door at the south end of the narthex, turn round and look up above the door to see a beautiful tenth-century mosaic of an emperor and empress offering symbols of Haghia Sophia and Constantinople to the Virgin Mary and Child.
Then the following statement: "The emperor and empress in the mosaic are intended to represent Justinian and Theodora." is true, false, or inconclusive?