context: Chances are slight that Brian is green. It is highly unlikely that Greg is a frog. It is probable that Lily is a lion. It is highly likely that if either Brian is green, or Lily is a lion, then John moved to the garden. Chances are about even that if Brian is green, and Greg is a frog, then Bernhard is yellow. It is probable that if Brian is green, or Greg is a frog, then Mary went to the kitchen.
hypothesis: Chances are slight that either Brian is green, or Greg is a frog.
valid_hypothesis: Chances are slight that either Brian is green, or Greg is a frog.
invalid_hypothesis: It is probably the case that either Brian is green, or Greg is a frog.
hypothesis_assertion: Either Brian is green, or Greg is a frog.