Such stitching generally outlasts the fabric of jeans, as one can see from looking at the holey knees of jeans worn by many teenagers.
( ( Such stitching ) ( generally ( ( ( ( outlasts ( ( the fabric ) ( of jeans ) ) ) , ) ( as ( one ( can ( see ( from ( looking ( at ( ( the ( holey knees ) ) ( of ( jeans ( worn ( by ( many teenagers ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (JJ Such) (NN stitching)) (ADVP (RB generally)) (VP (VBZ outlasts) (NP (NP (DT the) (NN fabric)) (PP (IN of) (NP (NNS jeans)))) (, ,) (SBAR (IN as) (S (NP (PRP one)) (VP (MD can) (VP (VB see) (PP (IN from) (S (VP (VBG looking) (PP (IN at) (NP (NP (DT the) (JJ holey) (NNS knees)) (PP (IN of) (NP (NP (NNS jeans)) (VP (VBN worn) (PP (IN by) (NP (JJ many) (NNS teenagers)))))))))))))))) (. .)))
Many teenagers have holes in the knees of their jeans because they live active lifestyles.
( ( Many teenagers ) ( ( have ( ( holes ( in ( ( the knees ) ( of ( their jeans ) ) ) ) ) ( because ( they ( live ( active lifestyles ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Many) (NNS teenagers)) (VP (VBP have) (VP (VBN holes) (PP (IN in) (NP (NP (DT the) (NNS knees)) (PP (IN of) (NP (PRP$ their) (NNS jeans))))) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP live) (NP (JJ active) (NNS lifestyles))))))) (. .)))