Premise: Back in the 1950s, twin colossi sat astride the Hudson, figuratively glowering at each  Betty Friedan in Grandview on the West Bank, writing The Feminine Mystique , and John Cheever in Scarborough on the East Bank, writing the Wapshot books and the short stories.

Hypothesis: Two famous authors lived on the same side of the Hudson river. 
Relation: contradiction