context: Chances are about even that Gertrude is a mouse. Chances are about even that Mary went to the hallway. It is likely that John moved to the garden. It is likely that if Mary went to the hallway, and Gertrude is a mouse, then Sandra got the apple. There is almost no chance that if John moved to the garden, and Gertrude is a mouse, then Julius is a swan. Chances are slight that if either John moved to the garden, or Gertrude is a mouse, then Greg is green.
hypothesis: It is likely that mary went to the hallway, and Julius is a swan.
valid_hypothesis: It is impossible that mary went to the hallway, and Julius is a swan.
invalid_hypothesis: It is likely that mary went to the hallway, and Julius is a swan.
hypothesis_assertion: Mary went to the hallway, and Julius is a swan.