(S (BASENP (DT The) (NNP Alaska) (NNP Volcano) (NNP Observatory)) (VP (VP (VBD set) (BASENP (PRPD its) (NN alert) (NN level))) (PP (IN at) (NP (NP (BASENP (NN red)) (COMMA ,) (BASENP (DT the) (ADJP (ADJP (JJS highest)) (ADVP possible)) (NN level))) (COMMA ,) (VP (VBG meaning) (SBAR (SBAR (IN that) (S (BASENP (DT an) (NN eruption)) (VP (VBZ is) (ADJP (JJ imminent))))) (CONJP (COMMA ,) (CC and)) (SBAR (IN that) (S (BASENP (PRP it)) (VP (MD would) (VP (VP (VB send) (NP (DT a) (QTL (DQL ``) (NP (BASENP (JJ significant) (NN emission)) (PP (IN of) (BASENP (JJ volcanic) (NN ash))))))) (QTR (QTC (PP (IN into) (BASENP (DT the) (NN atmosphere))) (PERIOD .)) (DQR ''))))))))))))