Question:
Policemen advocated the use of wire taps to track terrorists, because they could not catch them without those tools.

Who is they referring to in this sentence?
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Answer:
Policemen


Question:
American Airlines offers upgrades for their preferred passengers so they continue choosing their airlines over others.

Who is they referring to in this sentence?
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Answer:
their preferred passengers


Question:
Jim taught John rhetoric to become a lawyer, but he did not pay him.

Who is he referring to in this sentence?
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Answer:
John


Question:
Malachi's program would not run on the computer because it was full of bugs.

Who is it referring to in this sentence?
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Answer:

Malachi's program