context: We believe that Bill went to the cinema. It is improbable that Bernhard is green. It is almost certain that Brian is a lion. We doubt that if Bernhard is green, and Brian is a lion, then Jessica is a mouse. There is a very good chance that if Bernhard is green, or Brian is a lion, then Mary moved to the garden. It is probably not the case that if either Bernhard is green, or Bill went to the cinema, then Sandra dropped the milk.
hypothesis: It is improbable that either Sandra dropped the milk, or Bill went to the cinema.
valid_hypothesis: There is a better than even chance that either Sandra dropped the milk, or Bill went to the cinema.
invalid_hypothesis: It is improbable that either Sandra dropped the milk, or Bill went to the cinema.
hypothesis_assertion: Either Sandra dropped the milk, or Bill went to the cinema.