context: It is probably not the case that Greg is a lion. There is a very good chance that Brian is a rhino. It is probably the case that Mary discarded the milk.
hypothesis: We believe that greg is a lion, or Mary discarded the milk.
valid_hypothesis: We believe that greg is a lion, or Mary discarded the milk.
invalid_hypothesis: It is improbable that greg is a lion, or Mary discarded the milk.
hypothesis_assertion: Greg is a lion, or Mary discarded the milk.