Anchor: However, some economists are concerned that the acceleration may be concentrated in durable manufacturing rather than widely disseminated throughout the economy.
Entailed: Some economists are concerned about the concentration in the economy. 
Contradiction: No economists were concerned with the concentration of acceleration. 
Contradiction: A football player flies in the sky
Contradiction: The two children are together.
Contradiction: The yacht sails by the mountain.
Contradiction: That's great, what's your age.