( they ( all ( ( seem ( to ( ( ( have ( a ( triple ( bond structure ) ) ) ) , ) ( either ( ( ( between ( nitrogen atoms ) ) or ) ( between ( carbon atoms ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP they)) (ADVP (DT all)) (VP (VBP seem) (S (VP (TO to) (VP (VB have) (NP (DT a) (JJ triple) (NN bond) (NN structure)) (, ,) (PP (CC either) (PP (IN between) (NP (NN nitrogen) (NNS atoms))) (CC or) (PP (IN between) (NP (NN carbon) (NNS atoms)))))))) (. .)))
they all seem to have a triple bond structure, either between nitrogen atoms or between carbon atoms.
(ROOT (S (NP (NNS Amines)) (VP (VBP are) (VP (VBN classified) (PP (VBG according) (PP (TO to) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NN carbon) (NNS atoms)) (VP (VBG bonded) (ADVP (RB directly)) (PP (TO to) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (JJ nitrogen) (NN atom))))))))))) (. .)))