(S (S (S (S (BASENP (DT The) (NNS quotas)) (VP (VBP are) (VP (VBN aimed) (PP (IN at) (S (VP (VBG supporting) (BASENP (NNS prices)))))))) (COMMA ,) (SBAR (IN as) (S (NP (BASENP (DT the) (NN demand)) (PP (IN for) (BASENP (JJ dairy) (NNS products)))) (VP (VBZ has) (VP (VBN plummeted) (PP (IN throughout) (BASENP (DT the) (JJ economic) (NN crisis)))))))) (COLON ;) (S (PP (IN in) (BASENP (DT some) (NNS cases))) (COMMA ,) (S (BASENP (NNS prices)) (VP (VBP have) (VP (VBN halved) (PP (IN since) (BASENP (NN 2007)))))))) (PERIOD .))