Besides going to Valencia for paella, the compleat traveler in Spain should experience duende .  This is not easy to arrange, however, for duende , unlike paella, cannot be made to order.
( ( Besides ( going ( to ( Valencia ( for paella ) ) ) ) ) ( , ( ( ( the ( compleat traveler ) ) ( in Spain ) ) ( ( should ( experience ( ( duende . ) ( This ( ( is not ) ( easy ( to ( ( ( ( arrange , ) however ) , ) ( for ( duende ( , ( ( unlike paella ) ( , ( ( can not ) ( be ( made ( to order ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Besides) (S (VP (VBG going) (PP (TO to) (NP (NP (NNP Valencia)) (PP (IN for) (NP (NN paella)))))))) (, ,) (NP (NP (DT the) (JJ compleat) (NN traveler)) (PP (IN in) (NP (NNP Spain)))) (VP (MD should) (VP (VB experience) (NP (NP (NNP duende) (. .)) (SBAR (S (NP (DT This)) (VP (VBZ is) (RB not) (ADJP (JJ easy) (S (VP (TO to) (VP (VB arrange) (, ,) (ADVP (RB however)) (, ,) (SBAR (IN for) (S (NP (NN duende)) (, ,) (PP (IN unlike) (NP (NN paella))) (, ,) (VP (MD can) (RB not) (VP (VB be) (VP (VBN made) (PP (TO to) (NP (NN order)))))))))))))))))) (. .)))
While paella is a good dish to eat in Valencia, duende is one that should be tried too even though it's tricky to order.
( ( While ( paella ( is ( a ( good ( dish ( to ( eat ( in Valencia ) ) ) ) ) ) ) ) ) ( , ( duende ( ( is ( one ( that ( should ( be ( ( tried too ) ( even ( though ( it ( 's ( tricky ( to order ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (NN paella)) (VP (VBZ is) (NP (DT a) (JJ good) (NN dish) (S (VP (TO to) (VP (VB eat) (PP (IN in) (NP (NNP Valencia)))))))))) (, ,) (NP (NN duende)) (VP (VBZ is) (NP (NP (CD one)) (SBAR (WHNP (WDT that)) (S (VP (MD should) (VP (VB be) (VP (VBN tried) (ADVP (RB too)) (SBAR (RB even) (IN though) (S (NP (PRP it)) (VP (VBZ 's) (ADJP (JJ tricky) (S (VP (TO to) (VP (VB order))))))))))))))) (. .)))