context: A man in a red shirt is giving toys to a small dog.
hypothesis: There is a better than even chance that there is a man and his dog at the park.
valid_hypothesis: Chances are slight that there is a man and his dog at the park.
invalid_hypothesis: There is a better than even chance that there is a man and his dog at the park.
hypothesis_assertion: There is a man and his dog at the park.