Anchor: A large project may require mobilization of several hundred boilermakers to a site, which will frequently require pulling
Entailed: Large projects can sometimes require both mobilization and frequent pulling by boilermakers on site.
Contradiction: A large project doesn't require boilermakers at this point in time.
Contradiction: It did not waver for a moment.
Contradiction: Some men are reading newspapers
Contradiction: I have been working for a long time on this. 
Contradiction: A swimmer in a head cap is racing others.