context: We believe that Mary went to the hallway. It is likely that Lily is green. It is probable that Fred dropped the apple. It is probably not the case that if Fred dropped the apple, and Lily is green, then Daniel is in the office. It is probably not the case that if Mary went to the hallway, and Fred dropped the apple, then Julius is a lion. There is a better than even chance that if Mary went to the hallway, or Fred dropped the apple, then Brian is gray.
hypothesis: It is highly unlikely that brian is gray, or Julius is a lion.
valid_hypothesis: There is a better than even chance that brian is gray, or Julius is a lion.
invalid_hypothesis: It is highly unlikely that brian is gray, or Julius is a lion.
hypothesis_assertion: Brian is gray, or Julius is a lion.