Anchor: One approximation is to make total engineering, project management, and testing proportional to the project duration.
Entailed: An approximation is to make complete engineering, project management and testing proportion.
Contradiction: The estimation is a lack of engineering, no management or testing. 
Contradiction: I think it is too hard to learn, and I don't think it will ever happen.
Contradiction: A man is wearing a shirt.
Contradiction: He never phoned the Ritz to speak to Julius Hersheimmer.
Contradiction: There is a boy that is crying.