context: Two performers, one man playing a guitar, and one woman with a mic raised to her mouth are sitting on chairs performing.
hypothesis: Chances are about even that the man and woman are doing karaoke together at a bar.
valid_hypothesis: Chances are about even that the man and woman are doing karaoke together at a bar.
invalid_hypothesis: It is certain that the man and woman are doing karaoke together at a bar.
hypothesis_assertion: The man and woman are doing karaoke together at a bar.