Anchor: Because of the nature of electronic data, it is sometimes difficult to ascertain whether the data have been altered or manipulated unless the signature is linked to the data in such a way that the signature verification process can detect data changes.
Entailed: The data is electronic.
Contradiction: It is easy to find out if data have been altered.
Contradiction: An Asian girl dances happily on her desk.
Contradiction: Did he not inform you?
Contradiction: The little boy is playing with his cars in his bedroom.
Contradiction: A happy kid in green eating bread