( Subject ( ( matter ( wherein ( ( ( the ( nitrogen atom ) ) ( of ( ( a ring ) ( containing ( ( ( a ( single ( nitrogen atom ) ) ) and ) ( three carbons ) ) ) ) ) ) ( is ( ( bonded ( ( directly or ) indirectly ) ) ( to ( an ( extracyclic ( phosphorus atom ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Subject)) (VP (NN matter) (SBAR (WHADVP (WRB wherein)) (S (NP (NP (DT the) (NN nitrogen) (NN atom)) (PP (IN of) (NP (NP (DT a) (NN ring)) (VP (VBG containing) (NP (NP (DT a) (JJ single) (NN nitrogen) (NN atom)) (CC and) (NP (CD three) (NNS carbons))))))) (VP (VBZ is) (VP (VBG bonded) (ADVP (RB directly) (CC or) (RB indirectly)) (PP (TO to) (NP (DT an) (JJ extracyclic) (NN phosphorus) (NN atom)))))))) (. .)))
Subject matter wherein the nitrogen atom of a ring containing a single nitrogen atom and three carbons is bonded directly or indirectly to an extracyclic 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))))))))))) (. .)))