(S (S (BASENP (EX There)) (VP (VBP are) (NP (BASENP (NN 300) (NNS planets)) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (VP (VBN known) (S (VP (TO to) (VP (VB orbit) (NP (BASENP (NNS stars)) (PP (JJ other) (PP (IN than) (BASENP (DT the) (NNP Sun))))))))))))))) (PERIOD .))