context: There is almost no chance that Mary picked up the apple. It is probable that Greg is a frog. Chances are about even that Gertrude is a wolf. It is unlikely that if Greg is a frog, or Gertrude is a wolf, then Jessica is a mouse. It is probable that if Mary picked up the apple, or Gertrude is a wolf, then John left the milk. Chances are about even that if Gertrude is a wolf, and Mary picked up the apple, then Lily is green.
hypothesis: Chances are slight that gertrude is a wolf, and Jessica is a mouse.
valid_hypothesis: Chances are slight that gertrude is a wolf, and Jessica is a mouse.
invalid_hypothesis: It is probably the case that gertrude is a wolf, and Jessica is a mouse.
hypothesis_assertion: Gertrude is a wolf, and Jessica is a mouse.