Question: The central ring of the Hammerstein Ballroom holds several thousand people for events which can take place in a raised platform square with 4 parallel ropes attached with turnbuckle called what?
Sentence (from "Hammerstein Ballroom"): The capacity of the ballroom is dependent on the configuration of the room; it seats 2,500 people for theatrical productions and musical performances, and several thousand for events held within a central ring.
Relevant evidence: Yes