Anchor: Four men climbing a tree while passersby watch.
Entailed: a bird was on rocks
Contradiction: not watched at alll
Contradiction: A girl falls off the swing and begins to cry
Contradiction: Importance or meaning is assessed by estimating variability with the number set to obtain a probability that the regularity represents population characteristics. 
Contradiction: Bush has disappointed in all regards.
Contradiction: a person stands behind a mosaic