1) Hercules
Proper nouns are names that are given to people, places, things, or ideas that make it "proper". An easy way to find proper nouns is to look out for capitalization.
2) parrot
Common nouns are people, places, things, or ideas.
3) boat
To find the antecedent we must find out what they are talking about. "Who will win it?" Win what? They will win the prize. What is the prize? The boat. So it = boat.
Hope this helps you out! Good luck, friend! :))