context: It is impossible that John took the apple. It is impossible that Sandra dropped the milk. It is highly unlikely that Greg is a frog. It is likely that if Greg is a frog, or Sandra dropped the milk, then Brian is yellow. It is highly likely that if Sandra dropped the milk, or Greg is a frog, then Mary went to the office. It is probably not the case that if John took the apple, or Sandra dropped the milk, then Lily is a lion.
hypothesis: It is impossible that sandra dropped the milk, and Greg is a frog.
valid_hypothesis: It is impossible that sandra dropped the milk, and Greg is a frog.
invalid_hypothesis: It is probable that sandra dropped the milk, and Greg is a frog.
hypothesis_assertion: Sandra dropped the milk, and Greg is a frog.