context: A biker wearing glass and a backpack rides near a fountain.
hypothesis: There is little chance that a biker is riding for a charity event through the center of town.
valid_hypothesis: There is little chance that a biker is riding for a charity event through the center of town.
invalid_hypothesis: There is a very good chance that a biker is riding for a charity event through the center of town.
hypothesis_assertion: A biker is riding for a charity event through the center of town.