context: Chances are about even that Greg is yellow. It is probably the case that Mary left the milk. It is probably not the case that John went to the office.
hypothesis: Chances are slight that greg is yellow, and John went to the office.
valid_hypothesis: Chances are slight that greg is yellow, and John went to the office.
invalid_hypothesis: We believe that greg is yellow, and John went to the office.
hypothesis_assertion: Greg is yellow, and John went to the office.