( Efficiency ( typically ( ( is ( defined ( as ( output ( divided ( by input ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Efficiency)) (ADVP (RB typically)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (NN output)) (VP (VBN divided) (PP (IN by) (NP (NN input)))))))) (. .)))
Efficiency typically is defined as output divided by input.
(ROOT (S (NP (NNP Efficiency)) (VP (VBZ equals) (NP (NP (DT the) (NN output) (NN power)) (VP (VBN divided) (PP (IN by) (NP (DT the) (NN input) (NN power)))))) (. .)))