Anchor: To do this, we determine whether the electronic signature system provides reasonable assurance that the signature produced by the system is (1) unique to the signer, (2) under the signer's sole control,
Entailed: Signatures are verified to a reasonable level.
Contradiction: Signatures are guaranteed to be the signer's.
Contradiction: Ibiza is a high paced, very serious city with little room for tourism.
Contradiction: He lead us to the center of the maze but refused to let us leave. 
Contradiction: All training and related travel costs are covered by employers.
Contradiction: Four people are outside.