(QT (DQL ``) (QTC (S (NP (NP (JJ Continuing) (BASENP (JJ seismic) (NN activity))) (CC and) (BASENP (NN web) (NN camera) (NNS images))) (VP (VBP indicate) (SBAR (IN that) (S (NP (BASENP (JJ low) (NN level) (NNS emissions)) (PP (IN of) (NP (NP (BASENP (NN steam)) (COMMA ,) (BASENP (NN gas))) (CONJP (COMMA ,) (CC and)) (BASENP (DT some) (JJ volcanic) (NN ash))))) (VP (VBP are) (VP (VBG continuing) (S (VP (TO to) (VP (VB be) (VP (VBN emitted) (PP (IN at) (NP (BASENP (DT the) (NN volcano)) (PP (IN at) (NP (BASENP (NNS altitudes)) (PP (IN of) (PRN (LRB [) (BASENP (NN 20,000) (NNS feet)) (RRB ]))))))))))))))))) (PERIOD .)) (DQR ''))