The forecasting challenges retailers confront have been amplified in recent years by product proliferation in almost every category.
( ( The forecasting ) ( ( challenges ( retailers ( confront ( have ( been ( ( amplified ( in ( recent years ) ) ) ( by ( ( product proliferation ) ( in ( almost ( every category ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN forecasting)) (VP (VBZ challenges) (SBAR (S (NP (NNS retailers)) (VP (VBP confront) (VP (VB have) (VP (VBN been) (VP (VBN amplified) (PP (IN in) (NP (JJ recent) (NNS years))) (PP (IN by) (NP (NP (NN product) (NN proliferation)) (PP (IN in) (NP (RB almost) (DT every) (NN category)))))))))))) (. .)))
The estimating challenges retailers go up against have been intensified as of late by item multiplication in practically every classification.
( ( The estimating ) ( ( challenges ( retailers ( ( go up ) ( against ( have ( been ( ( intensified ( as ( of late ) ) ) ( by ( ( item multiplication ) ( in ( practically ( every classification ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN estimating)) (VP (VBZ challenges) (SBAR (S (NP (NNS retailers)) (VP (VBP go) (PRT (RP up)) (PP (IN against) (S (VP (VB have) (VP (VBN been) (VP (VBN intensified) (ADVP (RB as) (IN of) (JJ late)) (PP (IN by) (NP (NP (NN item) (NN multiplication)) (PP (IN in) (NP (RB practically) (DT every) (NN classification)))))))))))))) (. .)))