We first turn to the problem of forecasting sales in retail stores.
( We ( first ( ( ( turn ( to ( ( the problem ) ( of ( forecasting sales ) ) ) ) ) ( in ( retail stores ) ) ) . ) ) )
(ROOT (S (NP (PRP We)) (ADVP (RB first)) (VP (VBP turn) (PP (TO to) (NP (NP (DT the) (NN problem)) (PP (IN of) (NP (NN forecasting) (NNS sales))))) (PP (IN in) (NP (JJ retail) (NNS stores)))) (. .)))
Sales forecasting is the most important aspect and should be addressed first.
( ( Sales forecasting ) ( ( ( ( is ( the ( ( most important ) aspect ) ) ) and ) ( should ( be ( addressed first ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Sales)) (VP (VBG forecasting))) (VP (VP (VBZ is) (NP (DT the) (ADJP (RBS most) (JJ important)) (NN aspect))) (CC and) (VP (MD should) (VP (VB be) (VP (VBN addressed) (ADVP (RB first)))))) (. .)))