context: It is probable that John went to the kitchen. It is probably the case that Gertrude is a mouse. It is unlikely that Lily is white. It is highly unlikely that if Gertrude is a mouse, and Lily is white, then Bill moved to the office. There is almost no chance that if Gertrude is a mouse, or Lily is white, then Brian is white. There is a better than even chance that if either Lily is white, or John went to the kitchen, then Bernhard is green.
hypothesis: Chances are about even that bill moved to the office, and Gertrude is a mouse.
valid_hypothesis: It is impossible that bill moved to the office, and Gertrude is a mouse.
invalid_hypothesis: Chances are about even that bill moved to the office, and Gertrude is a mouse.
hypothesis_assertion: Bill moved to the office, and Gertrude is a mouse.