context: We doubt that Julius is a rhino. It is probably the case that Greg is yellow. It is certain that Sandra left the apple.
hypothesis: It is impossible that greg is yellow, or Julius is a rhino.
valid_hypothesis: We believe that greg is yellow, or Julius is a rhino.
invalid_hypothesis: It is impossible that greg is yellow, or Julius is a rhino.
hypothesis_assertion: Greg is yellow, or Julius is a rhino.