context: It is probable that Greg is a frog. Chances are slight that John left the milk. It is certain that Bernhard is white. It is almost certain that if Greg is a frog, and Bernhard is white, then Sandra took the milk. It is likely that if either John left the milk, or Greg is a frog, then Mary went to the office. There is almost no chance that if John left the milk, or Bernhard is white, then Lily is a lion.
hypothesis: We doubt that either Greg is a frog, or John left the milk.
valid_hypothesis: It is likely that either Greg is a frog, or John left the milk.
invalid_hypothesis: We doubt that either Greg is a frog, or John left the milk.
hypothesis_assertion: Either Greg is a frog, or John left the milk.