context: Chances are about even that Mary moved to the office. It is probable that Brian is white. It is probable that John put down the milk.
hypothesis: It is highly likely that brian is white, or John put down the milk.
valid_hypothesis: It is highly likely that brian is white, or John put down the milk.
invalid_hypothesis: There is almost no chance that brian is white, or John put down the milk.
hypothesis_assertion: Brian is white, or John put down the milk.