context: There is a better than even chance that Mary grabbed the apple. It is impossible that Julius is a frog. It is probable that Greg is yellow.
hypothesis: It is impossible that julius is a frog, and Greg is yellow.
valid_hypothesis: It is impossible that julius is a frog, and Greg is yellow.
invalid_hypothesis: We believe that julius is a frog, and Greg is yellow.
hypothesis_assertion: Julius is a frog, and Greg is yellow.