( Kelvin ( ( ( temperature scale ) -RRB- ) . ) )
(ROOT (S (NP (NNP Kelvin)) (VP (VBZ temperature) (NP (NN scale))) (-RRB- -RRB-) (. .)))
Kelvin temperature scale ).
(ROOT (S (NP (DT The) (JJ kelvin) (NN scale) (NN temperature) (NN scale)) (VP (VBZ is) (ADVP (RB commonly)) (VP (VBN used) (PP (IN in) (NP (NN science))))) (. .)))