You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

Wilhelm swung the baseball bat at the ball and hit it with his great strength. The _ shattered into wood shards from the force of the blow.
bat

Jenna added chlorine gradually to her pool, because she wanted to make sure that the _ was making it cleaner.
chlorine

James was invited to a birthday party but he had no one to drive him because of car problems as the _ is starting right away.

party