Take the following as truth: In the grandiose interior, the luminous 12th- and 13th-century mosaics of the nave and apse depict the complete cycle of the Old Testament, replete with a 66-ft high Christ Pantocrator with saints, while the aisle mosaics narrate the miracles of Jesus.
Then the following statement: "The interior was completed in the 13th century." is true, false, or inconclusive?