Question: Chris was running after John, because he wanted to talk to him.
Based on this sentence, who is he?

Answer: Chris

Question: John flicked Bill because he had a fly on his shirt.
Based on this sentence, who is he?

Answer: Bill

Question: Rocky won the match with Richard because he worked hard.
Based on this sentence, who is he?

Answer: Rocky

Question: The police arrested the criminals since they break the law.
Based on this sentence, who is they?

Answer:
the criminals