context: There is a very good chance that Lily is green. It is highly likely that John went to the garden. It is probable that Sandra left the apple. There is almost no chance that if Sandra left the apple, or Lily is green, then Mary discarded the milk. It is highly unlikely that if John went to the garden, and Lily is green, then Julius is a swan. It is probably the case that if Sandra left the apple, and Lily is green, then Greg is a frog.
hypothesis: Chances are about even that lily is green, and Greg is a frog.
valid_hypothesis: Chances are about even that lily is green, and Greg is a frog.
invalid_hypothesis: It is almost certain that lily is green, and Greg is a frog.
hypothesis_assertion: Lily is green, and Greg is a frog.