( ( ( Power - ) ( Rate ( ( at which ) ( energy ( is ( ( ( released or ) consumed ) ( -LRB- ( ( expressed ( in watts ) ) -RRB- ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP Power)) (: -) (NP (NP (NNP Rate)) (SBAR (WHPP (IN at) (WHNP (WDT which))) (S (NP (NN energy)) (VP (VBZ is) (VP (VP (VBN released) (CC or) (VBN consumed)) (PRN (-LRB- -LRB-) (VP (VBN expressed) (PP (IN in) (NP (NNS watts)))) (-RRB- -RRB-))))))) (. .)))
Power- Rate at which energy is released or consumed (expressed in watts).
(ROOT (S (NP (NP (DT The) (NN rate)) (SBAR (IN that) (S (NP (NN energy)) (VP (VBZ is) (VP (VBN released)))))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NN power))))) (. .)))