( ( Processes ( wherein ( ( the ( nitrogen-containing ( organic compound ) ) ) ( contains ( a ( pentavalent ( nitrogen atom ) ) ) ) ) ) ) ( ( ( bonded ( by ( 4 ( covalent bonds ) ) ) ) ( to ( carbon atoms ) ) ) . ) )
(ROOT (S (NP (NP (NNS Processes)) (SBAR (WHADVP (WRB wherein)) (S (NP (DT the) (JJ nitrogen-containing) (JJ organic) (NN compound)) (VP (VBZ contains) (NP (DT a) (JJ pentavalent) (NN nitrogen) (NN atom)))))) (VP (VBD bonded) (PP (IN by) (NP (CD 4) (JJ covalent) (NNS bonds))) (PP (TO to) (NP (NN carbon) (NNS atoms)))) (. .)))
Processes wherein the nitrogen-containing organic compound contains a pentavalent nitrogen atom bonded by 4 covalent bonds to 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))))))))))) (. .)))