context: It is certain that Winona is a cat. Chances are about even that Julius is a lion. There is little chance that Mary went to the office.
hypothesis: It is highly unlikely that julius is a lion, or Mary went to the office.
valid_hypothesis: There is a better than even chance that julius is a lion, or Mary went to the office.
invalid_hypothesis: It is highly unlikely that julius is a lion, or Mary went to the office.
hypothesis_assertion: Julius is a lion, or Mary went to the office.