input question: Question: The astronaut wanted to find the United States from outer space, so where did he aim his spacecraft?  Choices:  - history book - atlas - map - towards ocean - northern hemisphere  The rationale to choose "northern hemisphere" as the answer is that:???
output answer: united states is in the northern hemisphere

Question: The forgotten leftovers had gotten quite old, he found it covered in mold in the back of his what?  Choices:  - carpet - refrigerator - breadbox - fridge - coach  The rationale to choose "refrigerator" as the answer is that:
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Answer: normally old food is put into a fridge and forgotten.

Q: Question: If a product doesn't last, what does it have a reputation of doing?  Choices:  - disintegrate - wear out - desolved - fall apart - dissipate  The rationale to choose "fall apart" as the answer is that:
A: synonyms: fall to pieces

Question: Question: What happens when you try to help someone but make it worse?  Choices:  - succeed - do nothing - anticipate - hinder - hurting  The rationale to choose "hinder" as the answer is that:
Answer: hindering someone is bad.

[Q]: Question: He had an index card he had to return, so where did he put it after finding the book he needed?  Choices:  - inside the book - oral report - library - fileing cabnet - card catalogue  The rationale to choose "card catalogue" as the answer is that:
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[A]: library card catalogue :: definition, merits and demerits - library ...

Problem: Given the question: Question: What must one be careful about when learning about science?  Choices:  - become educated - frustration - accidents - smiles - basketball  The rationale to choose "accidents" as the answer is that:
++++++++++++++++++++++++++++++++
The answer is:
accidents must one be careful about when learning about science?