Problem: I asked Dave to get me my sweater from the other side of the yacht . While he was gone, I rested my arm on the rail over there and suddenly *it* gave way.

Do "it" and "yacht" mean the same thing?

Answer: no

Problem: The lawyer asked the witness a question, but *he* was reluctant to repeat it.

Do "he" and "the witness" mean the same thing?

Answer: no

Problem: John hired Bill to take care of *him* .

Do "him" and "Bill" mean the same thing?

Answer:
no