Question: Which venue is shaped like a tower, Ülker Sports Arena or Etfal Hospital Clock Tower?
Sentence (from "Ülker Sports Arena"): The arena is owned and operated by Fenerbahçe S.K. The arena has a capacity of 15,000 people for concerts and 13,059 for basketball games, and it has hosted national and international sports events, such as basketball, volleyball, wrestling, and weightlifting; as well as concerts and congresses.
Relevant evidence: No