[Q]: The friends' dinnertime conversation turned to politics.

effect:

OPTIONS:
- The conversation quieted down.
- A debate erupted.
[A]: A debate erupted.
[Q]: The car looked filthy.

effect:

OPTIONS:
- The owner took it to the car wash.
- He owner took it in for a paint job.
[A]: The owner took it to the car wash.
[Q]: The motorcyclist twisted the throttle.

effect:

OPTIONS:
- The motorcycle coasted to a halt.
- The motorcycle shot forward.
[A]: The motorcycle shot forward.
[Q]: The man closed the book.

cause:

OPTIONS:
- He finished reading it.
- It provoked him to think.
[A]:
He finished reading it.