(S (S (PP (VBG According) (PP (TO to) (BASENP (DT the) (NN skier)))) (COMMA ,) (S (NP (BASENP (JJ many) (NNS people)) (SBAR (S (BASENP (PRP he)) (VP (VBD knew))))) (VP (MD could) (VP (ADVP (RB only)) (VP (VP (VB follow) (BASENP (DT the) (NNP Games))) (PP (IN by) (S (VP (VP (VBG searching) (PP (IN for) (BASENP (NN video)))) (PP (IN on) (NP (BASENP (NNS sites)) (PP (IN like) (BASENP (NNP YouTube))))))))))))) (PERIOD .))