(S (S (PP (IN In) (NP (BASENP (DT a) (NN press) (NN release)) (VP (VBN dated) (BASENP (NNP February) (NN 16th))))) (COMMA ,) (S (NP (BASENP (NNP Robert) (NNP Kahn)) (PRN (COMMA ,) (NP (BASENP (NNP Stanford) (NNP University) (POS 's)) (BASENP (NNP Public) (NNPS Affairs) (NNP Coordinator))) (COMMA ,))) (VP (VBD announced) (NP (NP (BASENP (DT the) (JJ experimental) (NN confirmation)) (PP (IN of) (BASENP (NN frame) (NN dragging)))) (COMMA ,) (NP (BASENP (DT an) (NN effect)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (BASENP (DT the) (NN presence)) (PP (IN of) (BASENP (DT a) (VBG rotating) (NN body)))) (VP (VBZ causes) (S (BASENP (NN space) (PRP itself)) (VP (TO to) (VP (VB be) (VP (VP (VBN pulled) (ADVP (RB along))) (SBAR (IN as) (S (BASENP (DT the) (NN body)) (VP (VBZ rotates)))))))))))))))) (PERIOD .))