context: Chances are slight that Bill discarded the milk. There is a very good chance that Brian is white. Chances are about even that Greg is a lion.
hypothesis: It is highly unlikely that greg is a lion, or Bill discarded the milk.
valid_hypothesis: There is a better than even chance that greg is a lion, or Bill discarded the milk.
invalid_hypothesis: It is highly unlikely that greg is a lion, or Bill discarded the milk.
hypothesis_assertion: Greg is a lion, or Bill discarded the milk.