context: We doubt that Julius is a rhino. We believe that Mary picked up the apple. Chances are about even that Lily is a frog. It is probable that if either Lily is a frog, or Mary picked up the apple, then Fred went to the kitchen. It is unlikely that if Julius is a rhino, and Lily is a frog, then Bernhard is a swan. There is almost no chance that if either Julius is a rhino, or Lily is a frog, then Greg is yellow.
hypothesis: It is likely that julius is a rhino, and Greg is yellow.
valid_hypothesis: It is impossible that julius is a rhino, and Greg is yellow.
invalid_hypothesis: It is likely that julius is a rhino, and Greg is yellow.
hypothesis_assertion: Julius is a rhino, and Greg is yellow.