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

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

Answer: yes


Problem: Mary tucked her daughter Anne into bed, so that *she* could work.

Do "she" and "Mary" mean the same thing?

Answer: yes


Problem: At the Loebner competition the judges couldn't figure out which respondents were the chatbots because *they* were so stupid.

Do "they" and "the chatbots" mean the same thing?

Answer:
no