(S (S (NP (BASENP (DT The) (NN 30) (JJ second) (NN ad)) (PRN (LRB -LRB-) (S (VP (VB see) (NP (BASENP (NN source)) (ADVP (RB below))))) (RRB -RRB-))) (VP (MD can) (VP (ADVP (RB now)) (VP (VB be) (VP (VBN viewed) (PP (IN on) (BASENP (NNP YouTube)))))))) (PERIOD .))