(S (S (NP (BASENP (NNP Jeremy) (NNP Lindseth)) (PRN (COMMA ,) (NP (BASENP (DT a) (NN spokesman)) (PP (IN for) (BASENP (DT the) (NN airport)))) (COMMA ,))) (VP (VBD said) (SBAR (IN that) (S (S (NP (BASENP (RB only) (JJ small) (NN amount)) (PP (IN of) (BASENP (NN ash)))) (VP (VBD reached) (BASENP (DT the) (NN airport)))) (CONJP (COMMA ,) (CC but)) (S (S (VP (VBD was) (ADJP (ADJP (JJ significant) (RB enough)) (S (VP (TO to) (VP (VB disrupt) (BASENP (NNS operations)))))))) (COMMA ,) (SBAR (IN as) (S (BASENP (NN ash)) (VP (MD can) (VP (VP (VB cause) (BASENP (NN engine) (NNS problems))) (PP (IN for) (BASENP (NN aircraft)))))))))))) (PERIOD .))