context: There is almost no chance that John left the football. It is improbable that Bernhard is a swan. Chances are slight that Mary moved to the garden. There is a better than even chance that if either Mary moved to the garden, or John left the football, then Brian is white. It is impossible that if Mary moved to the garden, or Bernhard is a swan, then Julius is a lion. There is almost no chance that if either John left the football, or Mary moved to the garden, then Gertrude is a cat.
hypothesis: It is impossible that mary moved to the garden, and John left the football.
valid_hypothesis: It is impossible that mary moved to the garden, and John left the football.
invalid_hypothesis: We believe that mary moved to the garden, and John left the football.
hypothesis_assertion: Mary moved to the garden, and John left the football.