context: It is impossible that Bernhard is a swan. There is almost no chance that Greg is a lion. It is improbable that Mary went to the kitchen. It is probably the case that if Bernhard is a swan, and Greg is a lion, then John left the football. It is probably the case that if either Mary went to the kitchen, or Bernhard is a swan, then Sumit is thirsty. It is probably the case that if Mary went to the kitchen, and Greg is a lion, then Lily is a lion.
hypothesis: It is certain that john left the football, and Sumit is thirsty.
valid_hypothesis: It is impossible that john left the football, and Sumit is thirsty.
invalid_hypothesis: It is certain that john left the football, and Sumit is thirsty.
hypothesis_assertion: John left the football, and Sumit is thirsty.