( Some ( ( contain ( carbon compounds ) ) . ) )
(ROOT (S (NP (DT Some)) (VP (VBP contain) (NP (NN carbon) (NNS compounds))) (. .)))
Some contain carbon compounds.
(ROOT (S (NP (NP (NNS Compounds)) (VP (VBG containing) (NP (DT the) (NN element) (NN carbon)))) (VP (VBP are) (NP (NP (DT the) (NN basis)) (PP (IN of) (NP (DT all) (VBN known) (NN life))))) (. .)))
Compounds containing the element carbon are the basis of all known life.