IN:
Multi-choice problem: [he]

A policeman saw John Edwards commit the crime, so he apprehended the criminal.

OUT:
A policeman

IN:
Multi-choice problem: [they]

Stark Industries produces the best technology for the military, but they pay top dollar to equip their forces with this.

OUT:
the military

IN:
Multi-choice problem: [he]

Clinton wanted Obama to run for president because he would win.

OUT:
Obama

IN:
Multi-choice problem: [he]

The youth outran the old man because he broke his hip.

OUT:
the old man