Anchor: Manta, the unbleached muslin which served to cover such openings in the frontier ranches, was tacked taut, allowing in air but only subdued light.
Entailed: The manta let in air but a limited amount of light.
Contradiction: The muslin was bleached and blocked out air.
Contradiction: He is very funny.
Contradiction: He found one he liked, but didn't get it yet. 
Contradiction: No draft products will result from the work.
Contradiction: Walled Jewish ghettoes were established by the Germans in Warsaw and Krakew.