CONTEXT: Then he took a piece of iron the shape of the horse horse's foot , and clapped *it* on, and drove some nails through the shoe quite into its hoof, so that the shoe was firmly on

Multi-choice question: Do "piece of iron" and "it" have the same meaning?
yes

CONTEXT: The fish ate the worm . *It* was tasty.

Multi-choice question: Do "the worm" and "It" have the same meaning?
yes

CONTEXT: Pete envies Martin although *he* is very successful.

Multi-choice question: Do "Martin" and "he" have the same meaning?
no

CONTEXT: John couldn't see the stage with Billy in front of him because *he* is so tall.

Multi-choice question: Do "John" and "he" have the same meaning?
no