context: It is impossible that Julius is a swan. It is unlikely that Greg is a rhino. It is likely that John picked up the milk.
hypothesis: We believe that greg is a rhino, or John picked up the milk.
valid_hypothesis: We believe that greg is a rhino, or John picked up the milk.
invalid_hypothesis: It is unlikely that greg is a rhino, or John picked up the milk.
hypothesis_assertion: Greg is a rhino, or John picked up the milk.