Anchor: Two children are practicing martial arts
Entailed: Children are practicing martial arts.
Contradiction: Two children are playing baseball inside their house.
Contradiction: I'm certain that it's highly inefficient.
Contradiction: A young man crosses the street.
Contradiction: It is in an owners best interest to overestimate expected project costs.
Contradiction: The Red Sea coast is very different to the hot archaeological sites of the Nile Valley.