context: It is certain that Greg is a frog. Chances are slight that Bernhard is a swan. Chances are about even that Sandra grabbed the milk. There is a better than even chance that if either Greg is a frog, or Sandra grabbed the milk, then Jason is hungry. We believe that if Sandra grabbed the milk, or Bernhard is a swan, then Mary moved to the garden. There is almost no chance that if Greg is a frog, and Sandra grabbed the milk, then Winona is a cat.
hypothesis: We believe that greg is a frog, and Jason is hungry.
valid_hypothesis: It is probably not the case that greg is a frog, and Jason is hungry.
invalid_hypothesis: We believe that greg is a frog, and Jason is hungry.
hypothesis_assertion: Greg is a frog, and Jason is hungry.