context: It is impossible that Sandra got the football. It is almost certain that Mary put down the milk. There is little chance that Lily is a lion.
hypothesis: It is almost certain that either Mary put down the milk, or Sandra got the football.
valid_hypothesis: It is almost certain that either Mary put down the milk, or Sandra got the football.
invalid_hypothesis: It is improbable that either Mary put down the milk, or Sandra got the football.
hypothesis_assertion: Either Mary put down the milk, or Sandra got the football.