context: It is likely that Greg is a rhino. There is little chance that Julius is a lion. There is little chance that Mary left the football.
hypothesis: It is impossible that julius is a lion, or Greg is a rhino.
valid_hypothesis: We believe that julius is a lion, or Greg is a rhino.
invalid_hypothesis: It is impossible that julius is a lion, or Greg is a rhino.
hypothesis_assertion: Julius is a lion, or Greg is a rhino.