Anchor: Most of the groups cited maintaining or increasing the technical expertise among their security staff as a major challenge, largely due to the high demand
Entailed: High demand is causing most of the groups references to increase the technical expertise among security staff.
Contradiction: The demand for security staff being more technically knowledgeable isn't in high demand.
Contradiction: The preamble describes 56 different alternatives. 
Contradiction: People are knitting.
Contradiction: The firefighters are enjoy a day at the beach on Mars.
Contradiction: A dog is following its owner.