context: A man sits in a dingy stall which says "Sol Septu" on the sidewalk while a man poses before the stand but does not look at it.
hypothesis: It is probable that a man works in a stall while another man stands in front of the stall keeping watch for troublemakers.
valid_hypothesis: It is unlikely that a man works in a stall while another man stands in front of the stall keeping watch for troublemakers.
invalid_hypothesis: It is probable that a man works in a stall while another man stands in front of the stall keeping watch for troublemakers.
hypothesis_assertion: A man works in a stall while another man stands in front of the stall keeping watch for troublemakers.