( ( WEIGHT ( 20 Weight ) ) ( ( is ( ( the force ) ( ( with which ) ( ( an object ) ( is ( ( pulled ( toward ( the earth ) ) ) ( by gravity ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP WEIGHT) (CD 20) (NNP Weight)) (VP (VBZ is) (NP (NP (DT the) (NN force)) (SBAR (WHPP (IN with) (WHNP (WDT which))) (S (NP (DT an) (NN object)) (VP (VBZ is) (VP (VBN pulled) (PP (IN toward) (NP (DT the) (NN earth))) (PP (IN by) (NP (NN gravity))))))))) (. .)))
WEIGHT 20 Weight is the force with which an object is pulled toward the earth by gravity.
(ROOT (S (NP (NNP Weight)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN gravity)) (VP (VBG pulling) (PRT (RP down)) (PP (IN on) (NP (DT an) (NN object)))))))))))) (. .)))