[Q]: I pushed the pendulum.
What is the effect?

[A]: It swung back and forth.


[Q]: The putrid odor filled the room.
What is the effect?

[A]: I clamped my hand over my nose.


[Q]: The dust came off the desk.
What is the cause?

[A]: I wiped the desk with a cloth.


[Q]: The girl desired her parent's approval.
What is the effect?

[A]:
She obeyed her parent's rules.