( Temperature ( ( is ( ( ( defined ( as ( ( a measure ) ( of ( the ( average ( kinetic energy ) ) ) ) ) ) ) ( -LRB- ( ( or speed ) -RRB- ) ) ) ( of ( ( the molecules ) ( in ( the air ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Temperature)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (DT the) (JJ average) (JJ kinetic) (NN energy))))) (PRN (-LRB- -LRB-) (CC or) (VB speed) (-RRB- -RRB-)) (PP (IN of) (NP (NP (DT the) (NNS molecules)) (PP (IN in) (NP (DT the) (NN air))))))) (. .)))
Temperature is defined as a measure of the average kinetic energy (or speed) of the molecules in the air.
(ROOT (S (PP (IN In) (NP (NN physics))) (, ,) (NP (NN temperature)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (JJ average) (JJ kinetic) (NN energy)) (PP (IN of) (NP (NP (DT the) (NNS particles)) (PP (IN in) (NP (DT an) (NN object))))))))) (. ?)))