(S (S (PP (IN As) (NP (BASENP (DT a) (NN result)) (PP (IN of) (NP (BASENP (JJ recent) (NNS eruptions)) (PP (IN at) (BASENP (NNP Redoubt))))))) (COMMA ,) (S (NP (BASENP (NN half)) (PP (IN of) (NP (NP (BASENP (DT the) (QP (NN 6) (NN million)) (NNS gallons)) (PP (IN of) (BASENP (NN crude) (NN oil)))) (VP (VBN stored) (PP (IN in) (BASENP (DT the) (NNP Drift) (NNP Valley))))))) (VP (MD will) (VP (VB be) (VP (VBN removed) (PP (TO to) (BASENP (DT a) (JJR safer) (NN location)))))))) (PERIOD .))