QUESTION: Where do you originally get kleenex from?
Options:
- wipe nose
- blow nose
- box
- purse
- pocket
ANSWER: Let me think step-by-step: Box is a container with a flat base and sides, typically square or rectangular and having a lid. We do originally get Kleenex from a box. So the answer must be box.

QUESTION: What contains a ball to help it work efficiently?
Options:
- football field
- bearing
- gymnasium
- playground
- pool table
ANSWER: Let me think step-by-step: Bearing means to carry or provide support. A ball works efficiently when provided support. So the answer must be bearing.

QUESTION: George checked the rotor of the Apache, which wasn't powered by internal combustion, but by what?
Options:
- jet engine
- helicopter
- electric motor
- rotator
- electrical circuit
ANSWER: Let me think step-by-step: A rotor can be powered by a jet engine. Jet engine has electric motor fitted in whih helps to power up the rotor. So the answer must be jet engine.

QUESTION: Which entrance would you use if you do not want to use the back entrance?
Options:
- side
- main
- anterior
- current
- front
ANSWER:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let me think step-by-step: Houses generally have two entrances. Back and main are the two entrances of houses which one can use. So the answer must be main.