context: It is probably the case that Bernhard is white. There is a very good chance that Mary is in the school. There is almost no chance that Sandra took the apple. We believe that if Bernhard is white, or Mary is in the school, then John went to the kitchen. It is probable that if Mary is in the school, or Bernhard is white, then Lily is a rhino. Chances are about even that if Sandra took the apple, or Bernhard is white, then Greg is yellow.
hypothesis: It is impossible that lily is a rhino, and Mary is in the school.
valid_hypothesis: There is a better than even chance that lily is a rhino, and Mary is in the school.
invalid_hypothesis: It is impossible that lily is a rhino, and Mary is in the school.
hypothesis_assertion: Lily is a rhino, and Mary is in the school.