context: It is impossible that Brian is green. It is almost certain that Sandra dropped the apple. It is highly unlikely that Jessica is a sheep. It is highly unlikely that if Jessica is a sheep, and Brian is green, then Mary put down the milk. There is little chance that if Brian is green, or Jessica is a sheep, then Greg is a lion. It is likely that if Brian is green, and Sandra dropped the apple, then Bill went to the garden.
hypothesis: It is almost certain that either Brian is green, or Sandra dropped the apple.
valid_hypothesis: It is almost certain that either Brian is green, or Sandra dropped the apple.
invalid_hypothesis: It is unlikely that either Brian is green, or Sandra dropped the apple.
hypothesis_assertion: Either Brian is green, or Sandra dropped the apple.