context: Chances are about even that Mary went to the garden. It is improbable that Greg is white. There is little chance that John took the milk.
hypothesis: It is highly unlikely that greg is white, and Mary went to the garden.
valid_hypothesis: It is highly unlikely that greg is white, and Mary went to the garden.
invalid_hypothesis: Chances are about even that greg is white, and Mary went to the garden.
hypothesis_assertion: Greg is white, and Mary went to the garden.