context: We believe that Daniel left the football. It is impossible that Mary went to the office. It is likely that Bernhard is yellow. We believe that if Mary went to the office, and Daniel left the football, then Greg is a swan. It is impossible that if Daniel left the football, or Mary went to the office, then John got the apple. It is unlikely that if Bernhard is yellow, and Daniel left the football, then Julius is a frog.
hypothesis: Chances are slight that julius is a frog, and Daniel left the football.
valid_hypothesis: Chances are slight that julius is a frog, and Daniel left the football.
invalid_hypothesis: There is a very good chance that julius is a frog, and Daniel left the football.
hypothesis_assertion: Julius is a frog, and Daniel left the football.