@article{franketal:2007, author = "Frank, Anette and Krieger, Hans-Ulrich and Xu, Feiyu and Uszkoreit, Hans and Crysmann, Berthold and Jörg, Brigitte and Schäfer, Ulrich", title = "{Question Answering from Structured Knowledge Sources}", year = "2007", url = "http://www.sciencedirect.com/science?\_ob=ArticleURL\&\_udi=B758H-4J4HKC3-1\&\_user=10\&\_handle=V-WA-A-W-BD-MsSAYZW-UUW-U-AAVVEVDEVU-AAVWCWYDVU-DWVVAEEDE-BD-U\&\_fmt=summary\&\_coverDate=01\%2F27\%2F2006\&\_rdoc=3\&\_orig=browse\&\_srch=\%23toc\%2312927\%239999\%23999999999\%2399999!\&\_cdi=12927\&view=c\&\_acct=C000050221\&\_version=1\&\_urlVersion=0\&\_userid=10\&md5=5ece75ed0c372516437b5ad8088822df", journal = "Journal of Applied Logic. Special Issue on Questions and Answers: Theoretical and Applied Perspectives", number = "2", volume = "5", pages = "{20-48}" }