context: A man riding a red motorbike near a large crowd of people by some tents.
hypothesis: There is a better than even chance that a man is in a motorbike race against others.
valid_hypothesis: There is a better than even chance that a man is in a motorbike race against others.
invalid_hypothesis: There is little chance that a man is in a motorbike race against others.
hypothesis_assertion: A man is in a motorbike race against others.