Question:
The gardener watered the owner's rose because he was doing his job.

he
Answer:
The gardener
Question:
The Disney characters at Disney World entertain the audience because they are there to keep people happy.

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

they
Answer:
The police
Question:
Liu Kang threw the bags of Johnny Cage into the water since he mistakenly asked him to carry his bags.

he
Answer:

Johnny Cage