context: It is probably the case that Lily is yellow. It is impossible that John took the football. There is a very good chance that Bernhard is green. It is probably the case that if Lily is yellow, and John took the football, then Greg is a lion. It is highly unlikely that if either Bernhard is green, or John took the football, then Bill went to the garden. It is unlikely that if John took the football, or Bernhard is green, then Brian is gray.
hypothesis: Chances are slight that either Bernhard is green, or Greg is a lion.
valid_hypothesis: There is a very good chance that either Bernhard is green, or Greg is a lion.
invalid_hypothesis: Chances are slight that either Bernhard is green, or Greg is a lion.
hypothesis_assertion: Either Bernhard is green, or Greg is a lion.