IN: Which person is he?
The youth outran the old man because he broke his hip.
OUT: the old man

IN: Which person is they?
The Saudi government beheaded eight Bangladeshis because they wanted to adhere to Islamic laws.
OUT: The Saudi government

IN: Which person is they?
Police sweep bums off the benches of the park although they do not have a place to stay and sleep at night.
OUT: bums

IN: Which person is he?
Allen laughed at Jimmy because he told a funny joke.
OUT:
Jimmy