Problem: If "Jim comforted Kevin because he was so upset.", is "Jim was so upset." correct?

Answer: no


Problem: If "This book introduced Shakespeare to Goethe; it was a major influence on his writing.", is "It was a major influence on Goethe's writing." correct?

Answer: yes


Problem: If "John was jogging through the park when he saw a man juggling watermelons. He was very impressive.", is "John was very impressive." correct?

Answer:
no