How to Build Templates for RDF Question/Answering: An Uncertain Graph Similarity Join Approach - Weiguo Zheng; Lei Zou; Xiang Lian; Jeffrey Xu Yu; Shaoxu Song; Dongyan Zhao (Proceedings of the 2015 ACM SIGMOD International Conference on Management of Data, Melbourne, Victoria, Australia, May 31 - June 4, 2015, 2015)