rtokens: Their enemies were tangible if elusive , such as the people who pirated music cassettes .
pos: IN DT NNP , DT WP$ NN VBD TO VB NNS VBD WRB PRP VBD .
tokens: Before the Internet , those whose business was to protect copyrights knew where they stood .
ltokens: Because they do n't understand technology , they fear the unknown . "