( ( ( Only one ) ( -LRB- ( 1 -RRB- ) ) ) ( ( single ( entry ( discussed ( ( the conduct ) ( of ( ( a ( population-based study ) ) ( conducted ( in ( ( a community ) ( living ( in ( ( the vicinity ) ( of ( an incinerator ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (RB Only) (CD one)) (PRN (-LRB- -LRB-) (NP (CD 1)) (-RRB- -RRB-))) (VP (VBP single) (SBAR (S (NP (NN entry)) (VP (VBD discussed) (NP (NP (DT the) (NN conduct)) (PP (IN of) (NP (NP (DT a) (JJ population-based) (NN study)) (VP (VBN conducted) (PP (IN in) (NP (NP (DT a) (NN community)) (VP (VBG living) (PP (IN in) (NP (NP (DT the) (NN vicinity)) (PP (IN of) (NP (DT an) (NN incinerator)))))))))))))))) (. .)))
Only one (1) single entry discussed the conduct of a population-based study conducted in a community living in the vicinity of an incinerator.
(ROOT (S (NP (NP (NNS Populations)) (VP (VBG living) (PP (IN in) (NP (CD one) (NN place))))) (VP (VBP form) (NP (DT a) (NN community))) (. .)))