( Sun ( , ( warmth ( , ( ( moisture ( and ( chemical elements ) ) ) ( ( are ( ( the ( basic ( building blocks ) ) ) ( of ( that ( essential energy ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (NP (NNP Sun)) (, ,) (ADVP (RB warmth)) (, ,) (NP (NN moisture) (CC and) (NN chemical) (NNS elements)) (VP (VBP are) (NP (NP (DT the) (JJ basic) (NN building) (NNS blocks)) (PP (IN of) (NP (DT that) (JJ essential) (NN energy))))) (. .)))
Sun, warmth, moisture and chemical elements are the basic building blocks of that essential energy.
(ROOT (S (S (NP (NN Element)) (VP (VBZ is) (NP (NP (DT the) (JJ basic) (NN chemical) (NN building) (NN block)) (PP (IN of) (NP (NN matter)))))) (: ;) (S (NP (PRP it)) (VP (VBZ is) (NP (DT the) (JJS simplest) (NN chemical) (NN substance)))) (. .)))