Chapter 4 ( The Building Blocks of Lean Retailing) describes how the essential elements of lean retailing'bar codes
( ( ( Chapter 4 ) ( -LRB- ( ( ( The ( Building Blocks ) ) ( of ( Lean Retailing ) ) ) -RRB- ) ) ) ( describes ( how ( ( ( the ( essential elements ) ) ( of ( lean retailing ) ) ) ( ` ( bar codes ) ) ) ) ) )
(ROOT (S (NP (NP (NNP Chapter) (CD 4)) (PRN (-LRB- -LRB-) (NP (NP (DT The) (NNP Building) (NNP Blocks)) (PP (IN of) (NP (NNP Lean) (NNP Retailing)))) (-RRB- -RRB-))) (VP (VBZ describes) (SBAR (WHADVP (WRB how)) (S (NP (NP (DT the) (JJ essential) (NNS elements)) (PP (IN of) (NP (JJ lean) (NN retailing)))) (VP (`` `) (VBZ bar) (NP (NNS codes))))))))
Chapter 4 is about essential elements.
( ( Chapter 4 ) ( ( is ( about ( essential elements ) ) ) . ) )
(ROOT (S (NP (NN Chapter) (CD 4)) (VP (VBZ is) (PP (IN about) (NP (JJ essential) (NNS elements)))) (. .)))