context: It is certain that John put down the milk. There is almost no chance that Brian is green. It is improbable that Mary went to the garden.
hypothesis: Chances are slight that either Mary went to the garden, or John put down the milk.
valid_hypothesis: It is highly likely that either Mary went to the garden, or John put down the milk.
invalid_hypothesis: Chances are slight that either Mary went to the garden, or John put down the milk.
hypothesis_assertion: Either Mary went to the garden, or John put down the milk.