( Carbon ( ( is ( ( called ( ( the basis ) ( for life ) ) ) ( because ( ( all ( living things ) ) ( contain ( organic compounds ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Carbon)) (VP (VBZ is) (VP (VBN called) (NP (NP (DT the) (NN basis)) (PP (IN for) (NP (NN life)))) (SBAR (IN because) (S (NP (DT all) (VBG living) (NNS things)) (VP (VBP contain) (NP (JJ organic) (NNS compounds))))))) (. .)))
Carbon is called the basis for life because all living things contain organic 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.