( Subject ( ( matter ( wherein ( ( the ( phosphorus-containing ( nitrogen compound ) ) ) ( ( has ( ( ( ( at least ) one ) ( nitrogen atom ) ) directly ) ) ( bonded ( to ( a ( phosphorus atom ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Subject)) (VP (NN matter) (SBAR (WHADVP (WRB wherein)) (S (NP (DT the) (JJ phosphorus-containing) (NN nitrogen) (NN compound)) (VP (VBZ has) (ADVP (NP (QP (IN at) (JJS least) (CD one)) (NN nitrogen) (NN atom)) (RB directly)) (VP (VBN bonded) (PP (TO to) (NP (DT a) (NN phosphorus) (NN atom)))))))) (. .)))
Subject matter wherein the phosphorus-containing nitrogen compound has at least one nitrogen atom directly bonded to a phosphorus atom.
(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))))))))))) (. .)))