IN: Which person is him?
David hit Bill because Mary really liked him.
OUT: Bill

IN: Which person is they?
The government wants to prohibit the people from playing chess on Monday because they have to work.
OUT: the people

IN: Which person is they?
The Simpsons have lasted 23 seasons while The Sarah Connor Chronicles lasted two seasons, since they did not provide a very good show.
OUT: The Sarah Connor Chronicles

IN: Which person is him?
James cheated off Henry's test, and the Teacher told him.
OUT:
Henry