( ( The ( Network Organizations ) ) ( ( are ( ( described geographically ) ( by ( ( the ( ( number and ) concentration ) ) ( of ( ( ESRD beneficiaries ) ( in ( each area ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP Network) (NNP Organizations)) (VP (VBP are) (VP (VBN described) (ADVP (RB geographically)) (PP (IN by) (NP (NP (DT the) (NN number) (CC and) (NN concentration)) (PP (IN of) (NP (NP (JJ ESRD) (NNS beneficiaries)) (PP (IN in) (NP (DT each) (NN area))))))))) (. .)))
The Network Organizations are described geographically by the number and concentration of ESRD beneficiaries in each area.
(ROOT (S (NP (DT The) (NN term) (NN concentration)) (VP (VBZ describes) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS items)) (PP (IN in) (NP (NP (DT a) (VBN given) (NN area)) (CC or) (NP (NN volume)))))))) (. .)))