instruction:
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.
question:
Under the reflection of the light bulb, i can only see the clock frame and not the face because the _ is unreflective.
answer:
frame


question:
We cannot see the coin at the base of the pool but we can see it at the base of the drum. The _  is shallow.
answer:
drum


question:
Her grandmother's iron made a great substitution for the doorstop, because the _ was heavy.
answer:

iron