( ( ( the ( ecological footprint ) ) ( of ( the ( United States ) ) ) ) ( ( ( is large ) ( because ( ( ( per capita ) ( resource use ) ) ( is high ) ) ) ) . ) )
(ROOT (S (NP (NP (DT the) (JJ ecological) (NN footprint)) (PP (IN of) (NP (DT the) (NNP United) (NNPS States)))) (VP (VBZ is) (ADJP (JJ large)) (SBAR (IN because) (S (NP (ADJP (IN per) (NN capita)) (JJ resource) (NN use)) (VP (VBZ is) (ADJP (JJ high)))))) (. .)))
the ecological footprint of the United States is large because per capita resource use is high.
(ROOT (S (NP (NP (NNP High)) (PP (IN per) (NP (NP (NN capita) (NN use)) (PP (IN of) (NP (NNS resources)))))) (VP (VBZ means) (SBAR (S (NP (NP (DT the) (JJ ecological) (NN footprint)) (PP (IN of) (NP (DT the) (VBN united) (NNS states)))) (VP (VBZ is) (ADJP (JJ large)))))) (. .)))