(S (S (NP (BASENP (DT The) (NN comment)) (PP (IN about) (BASENP (NNP Canada)))) (VP (VBZ is) (ADJP (JJ secondary) (PP (TO to) (NP (BASENP (DT the) (NN ad) (POS 's)) (BASENP (JJ first) (NN purpose))))))) (PERIOD .))