context: There is little chance that Julius is a rhino. It is probably not the case that Emily is a cat. It is probable that Greg is a lion.
hypothesis: It is highly unlikely that greg is a lion, and Julius is a rhino.
valid_hypothesis: It is highly unlikely that greg is a lion, and Julius is a rhino.
invalid_hypothesis: Chances are about even that greg is a lion, and Julius is a rhino.
hypothesis_assertion: Greg is a lion, and Julius is a rhino.