context: We doubt that Julius is a swan. It is highly unlikely that Mary dropped the milk. Chances are slight that John got the football. There is almost no chance that if John got the football, and Julius is a swan, then Fred moved to the office. It is certain that if Mary dropped the milk, and John got the football, then Brian is white. It is almost certain that if John got the football, and Julius is a swan, then Lily is a lion.
hypothesis: There is almost no chance that julius is a swan, and Lily is a lion.
valid_hypothesis: There is almost no chance that julius is a swan, and Lily is a lion.
invalid_hypothesis: We believe that julius is a swan, and Lily is a lion.
hypothesis_assertion: Julius is a swan, and Lily is a lion.