Anchor: Total organochlorine pesticides plus PCBs should be less than 50 ng/L (APHA, 1992).
Entailed: The cumulative pesticides and PCBS needs to be less than 50 ng/L.
Contradiction: Pesticides and PCBs can be up to 100  ng/L.
Contradiction: and none of them are partying.
Contradiction: A kid at a carnival.
Contradiction: There is a clown making audience members laugh.
Contradiction: A group of people playing a board game.