\begin{topic}{Jack the Ripper adds up}
  \begin{fquery}$a+?b$\end{fquery}
  \begin{keyword}Jack\end{keyword}
  \begin{keyword}Ripper\end{keyword}
\begin{private}
    \begin{relevance}
      The hits should give an answer to the question whether there is any connection
      between Jack the Ripper and sums that start with a variable $a$. 
    \end{relevance}
    \examplehit{http://example.org/files/4711/0815.xhtml}
    \contributor{Michael Kohlhase}
\end{private}
\end{topic}
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