context: We doubt that Julius is a lion. We believe that Mary dropped the milk. It is highly likely that Jessica is a sheep. Chances are slight that if either Mary dropped the milk, or Jessica is a sheep, then John moved to the office. It is probable that if Jessica is a sheep, and Julius is a lion, then Lily is a swan. It is certain that if Mary dropped the milk, and Julius is a lion, then Bernhard is a frog.
hypothesis: It is probably the case that either Mary dropped the milk, or Lily is a swan.
valid_hypothesis: It is probably the case that either Mary dropped the milk, or Lily is a swan.
invalid_hypothesis: It is probably not the case that either Mary dropped the milk, or Lily is a swan.
hypothesis_assertion: Either Mary dropped the milk, or Lily is a swan.