context: It is probably not the case that Julius is a swan. We doubt that Mary went to the kitchen. It is highly unlikely that Greg is a lion. It is almost certain that if either Greg is a lion, or Julius is a swan, then Bernhard is a lion. There is a better than even chance that if either Mary went to the kitchen, or Greg is a lion, then Lily is a rhino. It is certain that if Greg is a lion, and Julius is a swan, then John moved to the office.
hypothesis: It is improbable that lily is a rhino, and Mary went to the kitchen.
valid_hypothesis: It is improbable that lily is a rhino, and Mary went to the kitchen.
invalid_hypothesis: It is likely that lily is a rhino, and Mary went to the kitchen.
hypothesis_assertion: Lily is a rhino, and Mary went to the kitchen.