context: It is probably the case that Greg is a swan. It is certain that Mary went to the bedroom. It is probably the case that Jessica is a mouse. It is unlikely that if Jessica is a mouse, and Mary went to the bedroom, then Bernhard is a lion. It is highly unlikely that if either Mary went to the bedroom, or Greg is a swan, then Gertrude is a wolf. It is improbable that if Greg is a swan, and Jessica is a mouse, then Sandra left the milk.
hypothesis: It is almost certain that either Mary went to the bedroom, or Sandra left the milk.
valid_hypothesis: It is almost certain that either Mary went to the bedroom, or Sandra left the milk.
invalid_hypothesis: Chances are slight that either Mary went to the bedroom, or Sandra left the milk.
hypothesis_assertion: Either Mary went to the bedroom, or Sandra left the milk.