Yi Zeng Yan Wang Zhisheng Huang Ning Zhong Unifying Web-Scale Search and Reasoning from the Viewpoint of Granularity. 418-429 2009 AMT http://dx.doi.org/10.1007/978-3-642-04875-3_44 conf/amt/2009 db/conf/amt/amt2009.html#ZengWHZ09