context: It is probable that Julius is gray. Chances are about even that John moved to the office. It is highly unlikely that Mary went to the kitchen.
hypothesis: There is a very good chance that julius is gray, and Mary went to the kitchen.
valid_hypothesis: It is highly unlikely that julius is gray, and Mary went to the kitchen.
invalid_hypothesis: There is a very good chance that julius is gray, and Mary went to the kitchen.
hypothesis_assertion: Julius is gray, and Mary went to the kitchen.