context: We doubt that Emily is a sheep. It is unlikely that John grabbed the milk. There is a better than even chance that Sandra got the apple.
hypothesis: It is likely that either John grabbed the milk, or Emily is a sheep.
valid_hypothesis: It is probably not the case that either John grabbed the milk, or Emily is a sheep.
invalid_hypothesis: It is likely that either John grabbed the milk, or Emily is a sheep.
hypothesis_assertion: Either John grabbed the milk, or Emily is a sheep.