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.

John cannot lift the bar to the top of the rack, so he tried lifting the plank instead. The _ is heavy.
bar

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

Jimmy wanted to learn how to learn about the hotel market so he took a class but the _ is crowded.

market