context: It is improbable that Julius is a swan. Chances are slight that Bernhard is white. It is highly likely that Jessica is a sheep.
hypothesis: There is a better than even chance that julius is a swan, and Bernhard is white.
valid_hypothesis: There is almost no chance that julius is a swan, and Bernhard is white.
invalid_hypothesis: There is a better than even chance that julius is a swan, and Bernhard is white.
hypothesis_assertion: Julius is a swan, and Bernhard is white.