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.

[EX Q]: His legs got stronger from pulling the sled instead of pushing the block, although _ was heavier in weight.
[EX A]: block

[EX Q]: The man planted the lotus flower in the garden instead of a rose because the _ was a common flower.
[EX A]: rose

[EX Q]: Martha threw the tennis ball at the baseball on the ground to get it to move. The _ was used as a tool.
[EX A]:
tennis ball