context: It is improbable that Bernhard is a lion. Chances are slight that Greg is a swan. Chances are about even that Daniel dropped the milk. It is probably not the case that if either Greg is a swan, or Daniel dropped the milk, then Emily is a wolf. It is unlikely that if either Greg is a swan, or Daniel dropped the milk, then John went to the office. It is highly likely that if either Bernhard is a lion, or Greg is a swan, then Mary moved to the garden.
hypothesis: It is almost certain that john went to the office, and Greg is a swan.
valid_hypothesis: There is almost no chance that john went to the office, and Greg is a swan.
invalid_hypothesis: It is almost certain that john went to the office, and Greg is a swan.
hypothesis_assertion: John went to the office, and Greg is a swan.