context: It is likely that Greg is gray. It is probably not the case that Mary went to the kitchen. It is highly unlikely that Emily is a cat.
hypothesis: It is unlikely that greg is gray, and Mary went to the kitchen.
valid_hypothesis: It is unlikely that greg is gray, and Mary went to the kitchen.
invalid_hypothesis: It is certain that greg is gray, and Mary went to the kitchen.
hypothesis_assertion: Greg is gray, and Mary went to the kitchen.