The tourist industry continued to expand, and though it became one of the top two income earners in Spain, a realization that unrestricted mass tourism was leading to damaging long-term consequences also began to grow.
( ( ( ( ( ( The ( tourist industry ) ) ( continued ( to expand ) ) ) , ) and ) ( ( though ( it ( became ( one ( of ( ( the ( top ( two ( income earners ) ) ) ) ( in Spain ) ) ) ) ) ) ) ( , ( ( ( a realization ) ( that ( unrestricted ( ( mass tourism ) ( was ( leading ( to ( damaging ( long-term consequences ) ) ) ) ) ) ) ) ) ( also ( began ( to grow ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN tourist) (NN industry)) (VP (VBD continued) (S (VP (TO to) (VP (VB expand)))))) (, ,) (CC and) (S (SBAR (IN though) (S (NP (PRP it)) (VP (VBD became) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (JJ top) (CD two) (NN income) (NNS earners)) (PP (IN in) (NP (NNP Spain))))))))) (, ,) (NP (NP (DT a) (NN realization)) (SBAR (WHNP (WDT that)) (S (VP (VBD unrestricted) (SBAR (S (NP (JJ mass) (NN tourism)) (VP (VBD was) (VP (VBG leading) (PP (TO to) (NP (JJ damaging) (JJ long-term) (NNS consequences))))))))))) (ADVP (RB also)) (VP (VBD began) (S (VP (TO to) (VP (VB grow)))))) (. .)))
Tourism is not very big in Spain.
( Tourism ( ( ( is not ) ( very ( big ( in Spain ) ) ) ) . ) )
(ROOT (S (NP (NNP Tourism)) (VP (VBZ is) (RB not) (ADJP (RB very) (JJ big) (PP (IN in) (NP (NNP Spain))))) (. .)))