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