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:
To ensure a healthy smile, Jason replaced with toothbrush with an electric brush. The _ requires more effort.
answer:
toothbrush


question:
Susan made the decision of  getting in an Airplane instead of train to go to Miami because the _ travels slow.
answer:
train


question:
Since she was trying to be healthy, the woman chose the sandwich over the soup because the _ was high in nutrients.
answer:

sandwich