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

Answer: ball


Question: As the gas filled the room, most people opted for the mask instead of the bag since the _ was efficient.

Answer: mask


Question: Despite it being an antique, Mary had to let go of the sewing table to make room for the baby swing, because the _ was needed.

Answer:
baby swing