context: There is a better than even chance that Winona is a mouse. It is probably not the case that Greg is a swan. It is likely that Julius is white. It is improbable that if either Greg is a swan, or Winona is a mouse, then Sandra got the football. It is highly unlikely that if Winona is a mouse, and Julius is white, then Daniel dropped the apple. It is improbable that if Greg is a swan, and Winona is a mouse, then Bernhard is a frog.
hypothesis: It is probable that sandra got the football, and Julius is white.
valid_hypothesis: It is highly unlikely that sandra got the football, and Julius is white.
invalid_hypothesis: It is probable that sandra got the football, and Julius is white.
hypothesis_assertion: Sandra got the football, and Julius is white.