context: Chances are about even that Bill is in the school. There is a better than even chance that Winona is a mouse. It is highly likely that John took the football. It is probably the case that if John took the football, or Bill is in the school, then Brian is yellow. There is almost no chance that if Winona is a mouse, or John took the football, then Greg is gray. There is little chance that if Bill is in the school, or John took the football, then Sandra got the apple.
hypothesis: Chances are slight that sandra got the apple, or Winona is a mouse.
valid_hypothesis: There is a better than even chance that sandra got the apple, or Winona is a mouse.
invalid_hypothesis: Chances are slight that sandra got the apple, or Winona is a mouse.
hypothesis_assertion: Sandra got the apple, or Winona is a mouse.