Problem: This book introduced Shakespeare to Ovid ; it was a major influence on *his* writing.

Are "his" and "Shakespeare" the same?
Answer: yes

Problem: The mothers of Arthur and Celeste have come to the town to fetch them. They are very happy to have *them* back, but they scold them just the same because they ran away.

Are "them" and "mothers" the same?
Answer: no

Problem: Ann asked Mary what time the library closes, because *she* had forgotten.

Are "she" and "Ann" the same?
Answer: yes

Problem: The sun was covered by a thick cloud all morning, but luckily, by the time the picnic started, *it* was out.

Are "it" and "The sun" the same?
Answer:
yes