Unsupervised Relation Discovery with Sense Disambiguation, Limin Yao, Sebastian Riedel and Andrew McCallum, Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (ACL '12) 2012 [pdf]
@inproceedings{yao12unsupervised,
    month={July}, 
    year={2012}, 
    author={Limin Yao and Sebastian Riedel and Andrew McCallum}, 
    bdsk-url-1={http://ciir-publications.cs.umass.edu/pub/web/getpdf.php?id=1032}, 
    booktitle={Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (ACL '12)}, 
    title={Unsupervised Relation Discovery with Sense Disambiguation}, 
}