rtokens: Wang 's family and Hangzhou police could not be reached for immediate comment .
pos: NNS RB MD RB VB WRB NNP VBD VBG VBN TO DT NN NN : DT NN IN DT JJ CD NNP NNP : CC VB WRB PRP MD VB VBN , DT NN VBD .
tokens: Police also would not say why Wang was being sent to a study class -- a holdover from the chaotic 1966-76 Cultural Revolution -- or say when he would be released , the group said .
ltokens: Police gave no reason for detaining Wang on Friday and would not let his family meet him or say where he was being held , the group said .