(QT (DQL ``) (QTC (S (BASENP (PRP This)) (VP (VBZ is) (PP (IN among) (NP (BASENP (DT the) (ADJP (RBS most) (JJ important)) (NNS events)) (SBAR (S (BASENP (NNP Cassini)) (VP (VBZ has) (VP (VBN shown) (BASENP (PRP us)))))))))) (PERIOD .)) (DQR ''))