context: It is highly likely that Bill is in the school. There is a better than even chance that John moved to the garden. It is almost certain that Lily is a lion. It is probably the case that if either Lily is a lion, or Bill is in the school, then Mary went to the kitchen. Chances are slight that if Lily is a lion, and Bill is in the school, then Brian is white. We believe that if either Bill is in the school, or Lily is a lion, then Gertrude is a mouse.
hypothesis: It is highly likely that either Brian is white, or Gertrude is a mouse.
valid_hypothesis: It is unlikely that either Brian is white, or Gertrude is a mouse.
invalid_hypothesis: It is highly likely that either Brian is white, or Gertrude is a mouse.
hypothesis_assertion: Either Brian is white, or Gertrude is a mouse.