( ( Determine ( ( the ( percent composition ) ) ( of ( ( each element ) ( in ( a compound ) ) ) ) ) ) . )
(ROOT (S (VP (VB Determine) (NP (NP (DT the) (NN percent) (NN composition)) (PP (IN of) (NP (NP (DT each) (NN element)) (PP (IN in) (NP (DT a) (NN compound))))))) (. .)))
Determine the percent composition of each element in a compound.
(ROOT (S (NP (DT The) (NN term) (NN percent) (NN composition)) (VP (VBZ means) (NP (DT the) (NN percentage)) (PP (IN by) (NP (NP (NN mass)) (PP (IN of) (NP (NP (DT each) (NN element)) (PP (IN in) (NP (DT a) (NN compound)))))))) (. .)))