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.

Q: Mary brought a ball to the field to play soccer, but she couldn't because the _ was flat.

A: ball
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Q: The door failed to mesh with the new house's frame because the _ was stable.

A: frame
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Q: The water spilling out of the pot put out the fire on the stove. The _ is weak.

A:
fire
****