Question:
Emily asked Anna to stir the pot, because she forgot to do it.

Who is she referring to in this sentence?
---
Answer:
Emily

Question:
Ashton Kutcher replaced Charlie Sheen as the main character of Two and a Half Men, but he did not leave the show willingly.

Who is he referring to in this sentence?
---
Answer:
Charlie Sheen

Question:
The police arrested the criminals since they enforce the law.

Who is they referring to in this sentence?
---
Answer:
The police

Question:
Neil Patrick Harris is a better singer than Dave Chappelle, since he had experience from Broadway.

Who is he referring to in this sentence?
---
Answer:
Neil Patrick Harris