@InProceedings{grishman:2011:IEKA,
  author    = {Grishman, Ralph},
  title     = {INVITED TALK 1: The Knowledge Base Population Task: Challenges for Information Extraction},
  booktitle = {Proceedings of the RANLP 2011 Workshop on Information Extraction and Knowledge Acquisition},
  month     = {September},
  year      = {2011},
  address   = {Hissar, Bulgaria},
  pages     = {1},
  url       = {http://aclweb.org/anthology/W11-4001}
  series	= {IEKA'11}
}