premise: Two street musicians, one wearing a mini leather cowboy hat, white t-shirt and black pants, holds a banjo while the other wears a orange shirt and black jeans leans against a fire hydrant. hypothesis: Two musicians wearing nothing and sleeping in a ditch.
contradiction: The musicians cannot be both wearing nothing and wearing a mini leather cowboy hat, white t-shirt and black pants and an orange shirt and black jeans. They also would not hold a banjo and lean against a fire hydrant while sleeping in a ditch.