Anchor: , Sulfur Dioxide Control By Electric  What are the Gains from Trade?
Entailed: Electric means can be used for sulfur dioxide control.
Contradiction: It is not possible to control sulfur dioxide.
Contradiction: A man searches for his car keys.
Contradiction: A young boy has a paper hat on.
Contradiction: worker in an office
Contradiction: I know whether or not there's something worth reading in the newspaper while I cook dinner.