Answer the following question about this sentence:

The cat purred.

What is the cause?
Ans: **I petted it.**

Answer the following question about this sentence:

The friends' dinnertime conversation turned to politics.

What is the effect?
Ans: **A debate erupted.**

Answer the following question about this sentence:

I wanted to lighten the mood of the conversation.

What is the effect?
Ans:
**I told a joke.**