Anchor: Four men walking around a construction site.
Entailed: Men at a construction site.
Contradiction: Four women walking around a construction site.
Contradiction: There were several continents who lived in peace, having never battled with each other. 
Contradiction: The current process was established in 1982.
Contradiction: No one is playing the guitar.
Contradiction: Subia got a call on Father's Day in 1980.