context: There is almost no chance that John picked up the milk. It is certain that Greg is a swan. It is improbable that Emily is a sheep.
hypothesis: It is improbable that either Emily is a sheep, or Greg is a swan.
valid_hypothesis: It is highly likely that either Emily is a sheep, or Greg is a swan.
invalid_hypothesis: It is improbable that either Emily is a sheep, or Greg is a swan.
hypothesis_assertion: Either Emily is a sheep, or Greg is a swan.