Anchor: It must have been done since yesterday, otherwise a good housemaid would have at once removed it with blotting-paper and a hot iron. 
Entailed: It had to have been done yesterday. 
Contradiction: It was done as week ago. 
Contradiction: Dozens of other alternatives are stated in the analysis, each with excellent ability to provide spectrum. 
Contradiction: Postal Service recognizes an inability to make economies of scale.
Contradiction: The US has been a net saver.
Contradiction: His lips were dry at this point.