(S (S (BASENP (DT An) (NN agreement)) (VP (VBD was) (VP (VBN reached) (S (VP (TO to) (VP (VP (VP (VB supply) (BASENP (DT an) (JJ additional) (QP (NN 60) (NN million)) (NNS barrels))) (PP (TO to) (BASENP (DT the) (NN market)))) (PP (IN over) (BASENP (DT the) (JJ next) (NN 30) (NNS days))))))))) (PERIOD .))