rtokens: Last month , Wang , 45 , a veteran dissident of the 1979 Democracy Wall movement , was ordered to serve one year of " re-education through labour " , but released because of poor health .
pos: DT NN VBD NNP POS NN CC VBD PRP$ NN VBD DT JJ NN NNP VBD VBG TO PRP$ NNP NNP NNS .
tokens: The group demanded Wang 's release and said his detention was a dangerous signal China was returning to its Cultural Revolution days .
ltokens: Wang 's family and Hangzhou police could not be reached for immediate comment .