QUES:
The cat purred.

What is a plausible cause?

ANS:
I petted it.

QUES:
The army surrendered the battle.

What is a plausible cause?

ANS:
They were outnumbered.

QUES:
I chugged the pitcher of water.

What is a plausible cause?

ANS:
I ran five miles.

QUES:
The DJ turned the music on.

What is a plausible effect?

ANS:
People began to dance.