The purpose of this paper is to analyze rural delivery costs and compare them with city delivery costs.
( ( ( The purpose ) ( of ( this paper ) ) ) ( ( is ( to ( ( ( analyze ( rural ( delivery costs ) ) ) and ) ( ( compare them ) ( with ( city ( delivery costs ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN purpose)) (PP (IN of) (NP (DT this) (NN paper)))) (VP (VBZ is) (S (VP (TO to) (VP (VP (VB analyze) (NP (JJ rural) (NN delivery) (NNS costs))) (CC and) (VP (VB compare) (NP (PRP them)) (PP (IN with) (NP (NN city) (NN delivery) (NNS costs)))))))) (. .)))
They looked at the costs for rural delivery.
( They ( ( ( looked ( at ( the costs ) ) ) ( for ( rural delivery ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD looked) (PP (IN at) (NP (DT the) (NNS costs))) (PP (IN for) (NP (JJ rural) (NN delivery)))) (. .)))