context: Chances are about even that Greg is yellow. It is impossible that Lily is a frog. Chances are slight that John put down the apple. There is almost no chance that if either Greg is yellow, or Lily is a frog, then Julius is a swan. There is a very good chance that if either Greg is yellow, or Lily is a frog, then Brian is white. There is little chance that if Lily is a frog, or Greg is yellow, then Mary moved to the office.
hypothesis: It is impossible that lily is a frog, and Brian is white.
valid_hypothesis: It is impossible that lily is a frog, and Brian is white.
invalid_hypothesis: It is likely that lily is a frog, and Brian is white.
hypothesis_assertion: Lily is a frog, and Brian is white.