( Identify ( ( ( an element ) ( as ( being ( composed ( of ( ( only ( one type ) ) ( of atom ) ) ) ) ) ) ) . ) )
(ROOT (FRAG (ADVP (RB Identify)) (NP (NP (DT an) (NN element)) (PP (IN as) (S (VP (VBG being) (VP (VBN composed) (PP (IN of) (NP (NP (RB only) (CD one) (NN type)) (PP (IN of) (NP (NN atom)))))))))) (. .)))
Identify an element as being composed of only one type of atom.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (NNS elements)) (SBAR (WHNP (WDT that)) (S (VP (VBP contain) (NP (NP (JJ only) (NNS atoms)) (PP (IN of) (NP (NP (CD one) (NN type)) (PP (IN of) (NP (NN element) (NN native) (NNS elements))))))))))) (. .)))