( ( ( Organic compounds ) ( which ( ( contain ( both ( ( ( a ( carboxylic ( acid group ) ) ) and ) ( an ( amine group ) ) ) ) ) ( on ( the ( same molecule ) ) ) ) ) ) ( ( are ( called ( amino acids ) ) ) . ) )
(ROOT (S (NP (NP (NNP Organic) (NNS compounds)) (SBAR (WHNP (WDT which)) (S (VP (VBP contain) (NP (PDT both) (NP (DT a) (JJ carboxylic) (JJ acid) (NN group)) (CC and) (NP (DT an) (JJ amine) (NN group))) (PP (IN on) (NP (DT the) (JJ same) (NN molecule))))))) (VP (VBP are) (VP (VBN called) (NP (JJ amino) (NNS acids)))) (. .)))
Organic compounds which contain both a carboxylic acid group and an amine group on the same molecule are called amino acids.
(ROOT (S (NP (NNP Amino) (NNS acids)) (VP (VBP contain) (NP (PDT both) (NP (DT a) (JJ carboxylic) (JJ acid) (NN group)) (CC and) (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-) (JJ amine) (NN group)))) (. .)))