[Q]: The girl wanted to demonstrate proper etiquette.

effect:
[A]: She put her napkin on her lap before eating.
[Q]: The bodybuilder lifted weights.

effect:
[A]: Her muscles became fatigued.
[Q]: The girl pushed her friend.

effect:
[A]: Her friend fell over.
[Q]: The man had lipstick on his cheek.

cause:
[A]:
The woman kissed him.