( ( With ( ( ( smaller amounts ) ( of ( pollutant precursors ) ) ) ( entering ( an incinerator ) ) ) ) ( , ( ( their ( availability ( to ( ( ( produce ( air pollutants ) ) and ) ( ash ( in ( the incinerator ) ) ) ) ) ) ) ( ( is reduced ) ; ) ) ) )
(ROOT (S (PP (IN With) (S (NP (NP (JJR smaller) (NNS amounts)) (PP (IN of) (NP (JJ pollutant) (NNS precursors)))) (VP (VBG entering) (NP (DT an) (NN incinerator))))) (, ,) (NP (PRP$ their) (NN availability) (S (VP (TO to) (VP (VP (VB produce) (NP (NN air) (NNS pollutants))) (CC and) (VP (ADJP (JJ ash)) (PP (IN in) (NP (DT the) (NN incinerator)))))))) (VP (VBZ is) (VP (VBN reduced))) (: ;)))
With smaller amounts of pollutant precursors entering an incinerator, their availability to produce air pollutants and ash in the incinerator is reduced;
(ROOT (S (NP (NP (NNP Ash)) (SBAR (WHNP (WDT that)) (S (VP (VBZ enters) (NP (DT the) (NN air)) (PP (ADVP (RB naturally)) (IN as) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (DT a) (NN volcano) (NN eruption))))))))) (VP (VBZ is) (VP (VBN classified) (PP (IN as) (NP (DT a) (JJ primary) (NN pollutant))))) (. .)))