The firm was stocking out of the low demand items, which, as described above, suffered from relatively high demand variation.
( ( The firm ) ( ( was ( ( ( ( stocking out ) ( of ( the ( low ( demand items ) ) ) ) ) , ) ( which ( , ( ( as ( described above ) ) ( , ( suffered ( from ( ( relatively high ) ( demand variation ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN firm)) (VP (VBD was) (VP (VBG stocking) (PRT (RP out)) (PP (IN of) (NP (DT the) (JJ low) (NN demand) (NNS items))) (, ,) (SBAR (WHNP (WDT which)) (S (, ,) (SBAR (IN as) (S (VP (VBD described) (ADVP (RB above))))) (, ,) (VP (VBD suffered) (PP (IN from) (NP (ADJP (RB relatively) (JJ high)) (NN demand) (NN variation)))))))) (. .)))
The firm quickly sold out of low demand items, which was surprising because the demand for them had been consistently low.
( ( The firm ) ( quickly ( ( ( sold out ) ( of ( ( ( low ( demand items ) ) , ) ( which ( ( was surprising ) ( because ( ( ( the demand ) ( for them ) ) ( had ( been ( consistently low ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN firm)) (ADVP (RB quickly)) (VP (VBD sold) (PRT (RP out)) (PP (IN of) (NP (NP (JJ low) (NN demand) (NNS items)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (ADJP (JJ surprising)) (SBAR (IN because) (S (NP (NP (DT the) (NN demand)) (PP (IN for) (NP (PRP them)))) (VP (VBD had) (VP (VBN been) (ADJP (RB consistently) (JJ low)))))))))))) (. .)))