(S (S (BASENP (NNS Scientists)) (VP (VP (VBD looked) (PP (IN for) (NP (BASENP (JJ small) (NNS changes)) (PP (IN in) (NP (BASENP (DT the) (NN motion)) (PP (IN of) (BASENP (DT the) (NNS gyroscopes)))))))) (S (VP (TO to) (VP (VB detect) (NP (BASENP (DT the) (NN frame) (NN dragging) (NN effect)) (CONJP (COMMA ,) (CONJP (ADVP (RB as) (RB well)) (IN as))) (NP (BASENP (DT the) (ADJP (RB much) (JJR larger)) (JJ geodetic) (NN effect)) (COLON --) (NP (NP (BASENP (JJ small) (NNS corrections)) (PP (TO to) (NP (DT the) (NP (BASENP (NNP Earth) (POS 's)) (BASENP (JJ gravitational) (NN field)))))) (PP (JJ due) (PP (TO to) (NP (BASENP (NNS differences)) (PP (IN between) (NP (NP (BASENP (NNP Einstein) (POS 's)) (CC and) (BASENP (NNP Newton) (POS 's))) (NP (BASENP (NNS theories)) (PP (IN of) (BASENP (NN gravity))))))))))))))))) (PERIOD .))