context: We doubt that Brian is a lion. It is probable that John put down the apple. There is little chance that Greg is a frog. There is almost no chance that if either Brian is a lion, or Greg is a frog, then Daniel dropped the milk. It is highly unlikely that if John put down the apple, or Brian is a lion, then Julius is a rhino. It is probably not the case that if John put down the apple, and Greg is a frog, then Mary got the football.
hypothesis: It is probably the case that daniel dropped the milk, and Brian is a lion.
valid_hypothesis: It is impossible that daniel dropped the milk, and Brian is a lion.
invalid_hypothesis: It is probably the case that daniel dropped the milk, and Brian is a lion.
hypothesis_assertion: Daniel dropped the milk, and Brian is a lion.