context: It is highly unlikely that Julius is a rhino. We believe that John went to the office. Chances are slight that Lily is a frog.
hypothesis: It is impossible that julius is a rhino, and Lily is a frog.
valid_hypothesis: It is impossible that julius is a rhino, and Lily is a frog.
invalid_hypothesis: It is likely that julius is a rhino, and Lily is a frog.
hypothesis_assertion: Julius is a rhino, and Lily is a frog.