Anchor: If, however, the Gore campaign is worried, they're not saying so publicly.
Entailed: If Gore campaign is worried they're not being public with it.
Contradiction: Gore campaign is publicly worried.
Contradiction: Schwartz only used data on the incidence of leukemia.
Contradiction: I surmise horses.  
Contradiction: The research needs to only be carried out on one element of the model.
Contradiction: Some mail may be viewed as community newspapers or shoppers.