Anchor: U.S. investment abroad does increase the nation's wealth and will generate income adding to U.S.
Entailed: International investment by the US increases our wealth.
Contradiction: International investment by the US decreases our wealth.
Contradiction: I don't think so. 
Contradiction: You can find a lot of kinds of food, from fresh tortillas to Chinese herbs.
Contradiction: Tuppence knew exactly how.
Contradiction: He said good luck to you.