Question:
Michael backed Bill because John asked him to.

him
Answer:
Michael
Question:
The Stars did not have many viewers watching the game last Friday because they were playing at the same time as the World Series.

they
Answer:
The Stars
Question:
Sarah went to Kelly's house because she was home.

she
Answer:
Kelly
Question:
Butters wanted to steal the movie Spiderman from Kenny because he would not lend it to him.

he
Answer:
Kenny