Problem: Since it was raining, I carried the newspaper in my backpack to keep *it* dry.
Are "it" and "the newspaper" the same?
****
Answer: yes


Problem: A man's life and a horse's life are worth more than some foxes' tails ; al least *they* ought to be.
Are "they" and "A man's life and a horse's life" the same?
****
Answer: yes


Problem: Carol believed that Rebecca suspected that *she* had stolen the watch.
Are "she" and "Carol" the same?
****
Answer:
yes