( ( Light ( Emitting Diode ) ) ( ( -LRB- ( LED -RRB- ) ) ( ( The ( general ( purpose silicon ) ) ) ( ( ( diode ( above ( ( emits ( excess energy ) ) ( in ( ( the form ) ( of heat ) ) ) ) ) ) ( when ( conducting current ) ) ) . ) ) ) )
(ROOT (S (NP (NNP Light) (NNP Emitting) (NNP Diode)) (PRN (-LRB- -LRB-) (NP (NNP LED)) (-RRB- -RRB-)) (NP (DT The) (JJ general) (NN purpose) (NN silicon)) (VP (VBP diode) (PP (IN above) (NP (NP (JJ emits) (JJ excess) (NN energy)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN heat))))))) (SBAR (WHADVP (WRB when)) (S (VP (VBG conducting) (NP (JJ current)))))) (. .)))
Light Emitting Diode (LED) The general purpose silicon diode above emits excess energy in the form of heat when conducting current.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NNS electrons)) (VP (VB return) (PP (TO to) (NP (DT a) (JJR lower) (NN energy) (NN level)))))) (, ,) (NP (PRP they)) (VP (VBP emit) (NP (NP (DT the) (JJ excess) (NN energy)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN light))))))) (. .)))