Anchor: nonclassified systems currently in use,
Entailed: Unclassified systems that are currently being used,
Contradiction: Classified systems are the only systems in use. 
Contradiction: Five women are three dogs are fighting.
Contradiction: A man is skateboarding.
Contradiction: Auditors do not need to report on material weaknesses.
Contradiction: I like to workout right after I return home from work.