context: It is highly likely that Mary left the football. We doubt that Brian is a lion. We believe that Julius is gray.
hypothesis: We believe that either Mary left the football, or Brian is a lion.
valid_hypothesis: We believe that either Mary left the football, or Brian is a lion.
invalid_hypothesis: It is highly unlikely that either Mary left the football, or Brian is a lion.
hypothesis_assertion: Either Mary left the football, or Brian is a lion.