( ( An azole ) ( ( is ( ( a class ) ( of ( ( five-membered ( nitrogen ( heterocyclic ( ring compounds ) ) ) ) ( containing ( ( ( ( at least ) one ) ( other ( non-carbon atom ) ) ) ( of ( ( ( ( ( ( either nitrogen ) , ) sulfur ) , ) or ) oxygen ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (NN azole)) (VP (VBZ is) (NP (NP (DT a) (NN class)) (PP (IN of) (NP (NP (JJ five-membered) (NN nitrogen) (NN heterocyclic) (NN ring) (NNS compounds)) (VP (VBG containing) (NP (NP (QP (IN at) (JJS least) (CD one)) (JJ other) (NN non-carbon) (NN atom)) (PP (IN of) (NP (NP (DT either) (NN nitrogen)) (, ,) (NP (NN sulfur)) (, ,) (CC or) (NP (NN oxygen)))))))))) (. .)))
An azole is a class of five-membered nitrogen heterocyclic ring compounds containing at least one other non-carbon atom of either nitrogen, sulfur, or oxygen.
(ROOT (S (NP (DT A) (JJ heterocyclic) (NN compound)) (VP (VBZ contains) (NP (NP (NNS atoms)) (PP (IN of) (NP (NP (QP (CD two) (CC or) (JJR more)) (JJ different) (NNS elements)) (PP (IN in) (NP (PRP$ its) (NN ring) (NN structure))))))) (. .)))