( ( ( Organic substances ) ( which fluoresce ) ) ( ( are ( ( anthracene ( , fluorescein ) ) ( , ( and ( ( ( other ( fused ( ring structures ) ) ) , ) ( used ( ( ( in ( fluroescent dyes ) ) and ) ( as ( tracer materials ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Organic) (NNS substances)) (SBAR (WHNP (WDT which)) (S (VP (VBP fluoresce))))) (VP (VBP are) (UCP (ADJP (JJ anthracene) (, ,) (JJ fluorescein)) (, ,) (CC and) (NP (NP (JJ other) (JJ fused) (NN ring) (NNS structures)) (, ,) (VP (VBN used) (PP (PP (IN in) (NP (JJ fluroescent) (NNS dyes))) (CC and) (PP (IN as) (NP (NN tracer) (NNS materials)))))))) (. .)))
Organic substances which fluoresce are anthracene, fluorescein, and other fused ring structures, used in fluroescent dyes and as tracer materials.
(ROOT (S (NP (DT A) (NN tracer)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN for) (NP (NP (DT a) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB be) (VP (VBN used) (S (VP (TO to) (VP (VB follow) (NP (NP (DT the) (NN pathway)) (PP (IN of) (NP (DT that) (NN substance)))) (PP (IN through) (NP (DT some) (NN structure))))))))))))))) (. .)))