rtokens: U.N. officials said more than 1,000 aid workers will take part in the census from Sunday until Tuesday of the estimated 727,000 refugees in camps around the eastern Zairean border town of Goma .
pos: PRP VBD NNS VBD NN NNS MD VB JJ NN TO VB PRP IN PRP MD VB VBN IN NNP NN NNS CC VBD IN PRP VBD VBN RB IN NNP .
tokens: It said refugees feared census takers would use indelible ink to mark them so they could be detected by Rwandan government troops and mistreated if they were forced back into Rwanda .
ltokens: " The RDR appeals to all refugees to prepare themselves calmly for the demands of the census agents because it will be in their ultimate interest , " the group said in a statement .