Anchor: Gold and silver are sold by weight, with relatively little extra cost added for workmanship, making them a good buy.
Entailed: Gold and silver are a great buy due to only a fractional cost put on for craftsmanship.
Contradiction: Gold and silver are not a good buy here because they add on a lot of extra cost for the work.
Contradiction: A person is watching tv
Contradiction: I used a semigloss, because the wall behind the paper was very smooth. 
Contradiction: Government-modified and government-developed tools are unavailable.
Contradiction: The discoverer decided a smaller ship would do.