Anchor: Rotating exhibitions on the African- American experience in the United States are offered at the Caleornia African-American Museum (600 State Drive), which has become a showcase for black history and culture.
Entailed: The African-American Museum is located at 600 State Drive.
Contradiction: The exhibits at the African-American Museum never rotate.
Contradiction: Operating information is unnecessary when determining if a company is following regulations. 
Contradiction: An electronic signature is a method of signing an electronic message which authenticates a particular person as the source of the electronic message.
Contradiction: This is rather lovely.
Contradiction: A person walks past art.