Anchor: This role is mandated by history (it's a natural extension of the melting-pot tradition), economics (America stands to gain most from globalization), and necessity (no one else can).
Entailed: Economics is one of the issues that makes the role necessary.
Contradiction: The role isn't mandated by economics or necessity.
Contradiction: A woman is at a restaurant eating a salad.
Contradiction: A dog out in the snow.
Contradiction: Nobody is posing.
Contradiction: A person walks past art.