Anchor: A roofer in a black jacket putting tiles on a roof.
Entailed: There is a person outside.
Contradiction: There is a child on the roof.
Contradiction: You do have to worry about that.
Contradiction: It's like a college campus and there's hudnred of people working there.
Contradiction: This is a terrible trade-off; don't make it.
Contradiction: The backpacker is standing outside.