( ( By 2003-2004 ) ( , ( ( ( the pace ) ( of ( XML evolution ) ) ) ( ( will ( slow ( as ( ( ( ( critical mass ) ( is reached ) ) and ) ( ( ( the weight ) ( of ( legacy constraints ) ) ) changes ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN By) (NP (CD 2003-2004))) (, ,) (NP (NP (DT the) (NN pace)) (PP (IN of) (NP (NN XML) (NN evolution)))) (VP (MD will) (VP (VB slow) (SBAR (IN as) (S (S (NP (JJ critical) (NN mass)) (VP (VBZ is) (VP (VBN reached)))) (CC and) (S (NP (NP (DT the) (NN weight)) (PP (IN of) (NP (NN legacy) (NNS constraints)))) (VP (VBZ changes))))))) (. .)))
By 2003-2004, the pace of XML evolution will slow as critical mass is reached and the weight of legacy constraints changes.
(ROOT (S (NP (NNP Human) (NN evolution)) (VP (VBZ shows) (SBAR (IN that) (S (NP (JJ evolutionary) (NNS changes)) (ADVP (RB typically)) (VP (VBP occur) (PP (IN at) (NP (DT a) (JJ slow) (NN pace))))))) (. .)))