( ( ( ( ( ( the ethyl ) ( is ( the ( two ( carbon chain ) ) ) ) ) , ) and ) ( ( the amine ) ( is ( the ( basic nitrogen ) ) ) ) ) . )
(ROOT (S (S (NP (DT the) (NN ethyl)) (VP (VBZ is) (NP (DT the) (CD two) (NN carbon) (NN chain)))) (, ,) (CC and) (S (NP (DT the) (NN amine)) (VP (VBZ is) (NP (DT the) (JJ basic) (NN nitrogen)))) (. .)))
the ethyl is the two carbon chain, and the amine is the basic nitrogen.
(ROOT (S (NP (DT The) (NN term) (NNS amines)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (NP (NP (NNS molecules)) (SBAR (WHNP (WDT that)) (S (VP (VBP contain) (NP (JJ carbon-nitrogen) (NNS bonds))))))))))) (. .)))