context: There is little chance that Lily is a frog. It is unlikely that Bernhard is a lion. Chances are slight that Sandra dropped the milk. Chances are slight that if Sandra dropped the milk, or Bernhard is a lion, then John moved to the office. It is certain that if Sandra dropped the milk, or Bernhard is a lion, then Greg is white. There is little chance that if either Bernhard is a lion, or Lily is a frog, then Mary went to the bedroom.
hypothesis: There is a very good chance that either Lily is a frog, or Greg is white.
valid_hypothesis: It is probably not the case that either Lily is a frog, or Greg is white.
invalid_hypothesis: There is a very good chance that either Lily is a frog, or Greg is white.
hypothesis_assertion: Either Lily is a frog, or Greg is white.