rtokens: How can we control them all ? "
pos: " EX VBP CD CD NNS VBN IN DT NN JJ , " VBD NNP NNP IN DT JJ NNP NNP NNP . "
tokens: " There are 500 million messages transmitted through the Internet everyday , " said Tim Casey of the U.S.-based MCI Communications Corporation . "
ltokens: Network operators said the draft laws would hold them responsible for copyright infringements in the system and expose them to multi-billion-dollar liabilities .