@electronic{rtw.ml.cmu.edu,
   title       = {Read the Web :: Carnegie Mellon University}, 
   url         = {http://rtw.ml.cmu.edu/rtw/},
   biburl      = {https://puma.uni-kassel.de/url/1eb072931d48bb367a253971a2188eb5/hotho},
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@electronic{iq.lycos.de,
   title       = {Lycos iQ | Startseite}, 
   url         = {http://iq.lycos.de/},
   biburl      = {https://puma.uni-kassel.de/url/6ed902de5786537bd4b020755216a9e7/hotho},
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@electronic{answers.yahoo.com,
   title       = {Yahoo Answer}, 
   url         = {http://answers.yahoo.com/},
   biburl      = {https://puma.uni-kassel.de/url/b7a9d27fe2a64a0d96533597e57a0f7f/hotho},
   keywords    = {base lycos antwort answer knowledge frage question},
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