Problem: Question: Where can you buy previously owned metal items?  Choices:  - instruments - hobby lobby - junkyard - ore - car  The rationale to choose "junkyard" as the answer is that:

A: the place where metal is sold is in the junkyard

Problem: Given the question: Question: What could hydrogen be added to to cause it to explode?  Choices:  - universe - chemistry lab - ocean - texas - air  The rationale to choose "air" as the answer is that:
++++++++++++++++++++++++++++++++
The answer is:
the mixture between air and hydrogen can generate a bomb

input question: Question: Sam thought that his efforts were necessary, but in reality the accomplished nothing.  They were what?  Choices:  - superfluous - useless - swap cs - unneeded - useless  The rationale to choose "useless" as the answer is that:???
output answer: useless activities would accomplish nothing in a task

Question: Authors have a wide range of emotions from relief to happiness when they finally what?  Choices:  - complete writing - write books - word passage - start book - write poems  The rationale to choose "complete writing" as the answer is that:
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Answer: completing something takes time and effort.

Q: Question: Where could you find passengers that are planning to travel to another continent?  Choices:  - car - bus depot - bus stop - library - airport  The rationale to choose "airport" as the answer is that:
A: they use only flights for transportation

[Q]: Question: Where can one attend a famous bazaar?  Choices:  - china - festival - istanbul - arabia - india  The rationale to choose "india" as the answer is that:
****
[A]:
shop in india country