Anchor: More efficient designs can also reduce the amount of steel needed for the absorber and ductwork.
Entailed: The amount of steel required for ductwork can be lowered with a more efficient design.
Contradiction: Steel requirements for ductwork don't get any better even with the use of more efficient designs.
Contradiction: The dogs are chasing a cat.
Contradiction: Some kids are sitting together.
Contradiction: A child is asleep in class.
Contradiction: Some children near water