Anchor: What follows the incredible spree of productivity that lasted from 1947-50 is a kind of brownout.
Entailed: Things seemed to simmer down after the boom of productivity from 1947 to 1950.
Contradiction: In terms of efficiency, not a lot happened from 1947-50. 
Contradiction: The two young girls are driving an airplane.
Contradiction: There is aman.
Contradiction: Boys play a team sport in uniforms.
Contradiction: Three people are riding something in the water.