(S (S (NP (BASENP (DT The) (NN theory)) (PP (IN of) (BASENP (JJ general) (NN relativity)))) (VP (VBD was) (VP (VP (VP (VP (VBN developed) (PP (IN by) (BASENP (NNP Albert) (NNP Einstein)))) (PP (IN in) (BASENP (DT the) (JJ early) (JJ 20th) (NN century)))) (S (VP (TO to) (VP (VB explain) (NP (BASENP (DT the) (NN behavior)) (PP (IN of) (NP (BASENP (VBG moving) (NNS objects)) (PP (IN in) (BASENP (NN space)))))))))) (COMMA ,) (PP (IN after) (NP (BASENP (DT the) (NN discovery)) (SBAR (IN that) (S (S (NP (BASENP (DT the) (NN speed)) (PP (IN of) (BASENP (NN light)))) (VP (VP (VBD was) (ADVP (RB always))) (BASENP (DT the) (NN same)))) (SBAR (ADVP (DT no) (NN matter)) (SBAR (WHADVP (WRB how)) (S (NP (BASENP (DT the) (NN person)) (VP (VBG measuring) (BASENP (PRP it)))) (VP (VBD was) (VP (VBG moving))))))))))))) (PERIOD .))