( ( ( The ( next level ) ) ( of ( complexity metric ) ) ) ( ( would ( provide ( ( ( an ( efficiency measure ) ) , ) ( ( the ( power output ) ) ( divided ( by ( the ( power input ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ next) (NN level)) (PP (IN of) (NP (NN complexity) (NN metric)))) (VP (MD would) (VP (VB provide) (NP (NP (DT an) (NN efficiency) (NN measure)) (, ,) (NP (NP (DT the) (NN power) (NN output)) (VP (VBN divided) (PP (IN by) (NP (DT the) (NN power) (NN input)))))))) (. .)))
The next level of complexity metric would provide an efficiency measure, the power output divided by the power 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)))))) (. .)))