( Carbon ( ( is ( ( the ( fundamental ( building block ) ) ) ( of ( ( ( ( all ( the ( organic compounds ) ) ) ( needed ( by ( living things ) ) ) ) , ) ( including ( nucleic ( acids ( , ( carbohydrates ( , ( ( proteins and ) fats ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Carbon)) (VP (VBZ is) (NP (NP (DT the) (JJ fundamental) (NN building) (NN block)) (PP (IN of) (NP (NP (PDT all) (DT the) (JJ organic) (NNS compounds)) (VP (VBN needed) (PP (IN by) (NP (VBG living) (NNS things)))) (, ,) (PP (VBG including) (NP (JJ nucleic) (NNS acids) (, ,) (NNS carbohydrates) (, ,) (NNS proteins) (CC and) (NNS fats))))))) (. .)))
Carbon is the fundamental building block of all the organic compounds needed by living things, including nucleic acids, carbohydrates, proteins and fats.
(ROOT (S (NP (NP (NNP Organic) (NNS substances)) (, ,) (PP (VBG including) (NP (NNS proteins) (, ,) (NNS carbohydrates) (, ,) (CC and) (NNS oils))) (, ,)) (VP (VBP contain) (NP (NN carbon))) (. .)))