( ( ( A species ) ( of lizard ) ) ( ( ( ( lives ( on ( islands ( of ( all sizes ) ) ) ) ) and ) ( has ( ( the ( same ( population density ) ) ) ( on ( each ( of ( those islands ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN species)) (PP (IN of) (NP (NN lizard)))) (VP (VP (VBZ lives) (PP (IN on) (NP (NP (NNS islands)) (PP (IN of) (NP (DT all) (NNS sizes)))))) (CC and) (VP (VBZ has) (NP (NP (DT the) (JJ same) (NN population) (NN density)) (PP (IN on) (NP (NP (DT each)) (PP (IN of) (NP (DT those) (NNS islands)))))))) (. .)))
A species of lizard lives on islands of all sizes and has the same population density on each of those islands.
(ROOT (S (NP (NP (DT All) (NNS members)) (PP (IN of) (NP (DT a) (NN species) (NN living)))) (ADVP (RB together)) (VP (VB form) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN population))) (. .)))