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]: George opted for both of them to use a knife instead of a gun in the duel because the _ could mortally injure them.
[EX A]: gun

[EX Q]: My father tried to drive the trailer into the garage but he couldn't, because the _ was too short.
[EX A]: garage

[EX Q]: James cannot press the button so he turned the knob instead. It turned out the _ is immovable.
[EX A]:
button