Our work on apparel supplier adjustments to lean retailing suggests that an economy characterized by an increasing level of modern manufacturing and retailing practices should experience lower levels of inventories relative to sales.
( ( ( Our work ) ( on ( ( apparel ( supplier adjustments ) ) ( to ( lean retailing ) ) ) ) ) ( ( suggests ( that ( ( ( an economy ) ( characterized ( by ( ( an ( increasing level ) ) ( of ( modern ( manufacturing ( and ( retailing practices ) ) ) ) ) ) ) ) ) ( should ( experience ( ( lower levels ) ( of ( inventories ( relative ( to sales ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (PRP$ Our) (NN work)) (PP (IN on) (NP (NP (NN apparel) (NN supplier) (NNS adjustments)) (PP (TO to) (NP (JJ lean) (NN retailing)))))) (VP (VBZ suggests) (SBAR (IN that) (S (NP (NP (DT an) (NN economy)) (VP (VBN characterized) (PP (IN by) (NP (NP (DT an) (VBG increasing) (NN level)) (PP (IN of) (NP (JJ modern) (NN manufacturing) (CC and) (NN retailing) (NNS practices))))))) (VP (MD should) (VP (VB experience) (NP (NP (JJR lower) (NNS levels)) (PP (IN of) (NP (NP (NNS inventories)) (ADVP (JJ relative) (PP (TO to) (NP (NNS sales)))))))))))) (. .)))
There are lower levels of inventory, relative to sales in an economy characterized by modern manufacturing. 
( There ( ( are ( ( ( ( lower levels ) ( of inventory ) ) , ) ( relative ( to ( sales ( in ( ( an economy ) ( characterized ( by ( modern manufacturing ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (JJR lower) (NNS levels)) (PP (IN of) (NP (NN inventory))) (, ,) (ADVP (JJ relative) (PP (TO to) (NP (NP (NNS sales)) (PP (IN in) (NP (NP (DT an) (NN economy)) (VP (VBN characterized) (PP (IN by) (NP (JJ modern) (NN manufacturing))))))))))) (. .)))