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.

Input: Consider Input: James won the legal argument because he presented video evidence that contradicted the witness as the _ was dubious.

Output: witness


Input: Consider Input: they had a pet tarantula that liked to climb the walls instead of the floor, because the _ were higher.

Output: walls


Input: Consider Input: After I was done reading, I moved the book from my backpack to the shelf, making the _ lighter.


Output: backpack