@INPROCEEDINGS{angie,
AUTHOR = {Preda, Nicoleta and Kasneci, Gjergji  and Suchanek, Fabian and Neumann, Thomas and Yuan, Wenjun},
TITLE = {Active Knowledge: Dynamically Enriching RDF Knowledge Bases by Web Services (ANGIE)},
BOOKTITLE = {International Conference on Management of Data (SIGMOD 2010)},
PUBLISHER = {ACM},
YEAR = {2010}
}