context: There is a very good chance that Emily is a wolf. It is almost certain that Bill went to the office. It is probably the case that Lily is a frog. It is unlikely that if Bill went to the office, and Lily is a frog, then Sandra dropped the milk. Chances are about even that if either Lily is a frog, or Emily is a wolf, then Brian is yellow. It is improbable that if either Emily is a wolf, or Lily is a frog, then Julius is white.
hypothesis: We believe that either Brian is yellow, or Lily is a frog.
valid_hypothesis: We believe that either Brian is yellow, or Lily is a frog.
invalid_hypothesis: There is almost no chance that either Brian is yellow, or Lily is a frog.
hypothesis_assertion: Either Brian is yellow, or Lily is a frog.