context: Chances are slight that Julius is white. It is almost certain that Lily is a swan. There is almost no chance that Emily is a mouse. It is almost certain that if either Lily is a swan, or Emily is a mouse, then Brian is yellow. It is highly likely that if Julius is white, or Lily is a swan, then Mary went to the hallway. It is probable that if either Emily is a mouse, or Julius is white, then Jeff discarded the apple.
hypothesis: It is almost certain that either Lily is a swan, or Emily is a mouse.
valid_hypothesis: It is almost certain that either Lily is a swan, or Emily is a mouse.
invalid_hypothesis: We doubt that either Lily is a swan, or Emily is a mouse.
hypothesis_assertion: Either Lily is a swan, or Emily is a mouse.