context: There is a very good chance that Lily is a rhino. It is improbable that Mary went to the office. It is probably the case that Brian is a lion.
hypothesis: It is improbable that either Mary went to the office, or Brian is a lion.
valid_hypothesis: It is likely that either Mary went to the office, or Brian is a lion.
invalid_hypothesis: It is improbable that either Mary went to the office, or Brian is a lion.
hypothesis_assertion: Either Mary went to the office, or Brian is a lion.