citation: @inproceedings{dataset_dai_labor,
      author = {Narr, Sascha  and Michael Hülfenhaus and  Albayrak, Sahin},
      title = {Language-Independent Twitter Sentiment Analysis},
      booktitle = {Workshop on Knowledge Discovery, Data Mining and Machine Learning (KDML-2012)},
      year = {2012},
      location = {Dortmund, Germany},
  }
  