This simple fact of sewing makes it very difficult to automate the process.
( ( ( This ( simple fact ) ) ( of sewing ) ) ( ( makes ( it ( ( very difficult ) ( to ( automate ( the process ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT This) (JJ simple) (NN fact)) (PP (IN of) (NP (NN sewing)))) (VP (VBZ makes) (S (NP (PRP it)) (ADJP (RB very) (JJ difficult)) (S (VP (TO to) (VP (VB automate) (NP (DT the) (NN process))))))) (. .)))
It will require a major breakthrough in artificial intelligence to completely automate.
( It ( ( will ( ( require ( ( a ( major breakthrough ) ) ( in ( artificial intelligence ) ) ) ) ( to ( completely automate ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (MD will) (VP (VB require) (NP (NP (DT a) (JJ major) (NN breakthrough)) (PP (IN in) (NP (JJ artificial) (NN intelligence)))) (S (VP (TO to) (VP (ADVP (RB completely)) (VB automate)))))) (. .)))