Question: Were Anadoluhisarı and Gül Mosque in Istanbul both constructed by the Ottomans?
Sentence (from "Anadoluhisarı"): It was built between 1393 and 1394 by the Ottoman sultan Bayezid I "The Thunderbolt" as part of his preparations for the Second Ottoman Siege of Constantinople, which took place in 1395.
Relevant evidence: Yes