Please Hurry I need the answer asap

1. There is a great lake inside the city surrounded by the most beautiful structures owned by the nobles. (It’s believable)

2. The Palace Hall is so large, 6000 people could be sat in the dining hall. There are a number of rooms, and altogether, the building is so beautiful and cannot be topped. (i think it’s believable)

3. Black stone found in the bed in mountains of Cathay can be fired, and will burn from dusk to dawn. (believable)

4. Many entertainers like players and jugglers come in and perform in order to amuse the emperor (believable)