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\begin{table}[tbp]
  \begin{center}
    \begin{tabular}[t]{|l|l|}
      \hhline{|--|}
      \begin{tabular}[t]{l}
        \emph{Genetics}\\
        Genetics \\
        genetic \\
        bioinformatic \\
        bioinformatics \\
        arabidopsis \\
        protein \\
        proteins \\
        RNA \\
        DNA \\
        MeSH\\
      \end{tabular}
      &
      \begin{tabular}[t]{l}
        \emph{News}\\
        News \\
        current events\\
        \hhline{-}
        \emph{Address Information}\\
        Address Information\\
        Address\\
        Addresses\\
        Addressing\\
        postcode\\
        zip code\\
        phone\\
        telephone\\
      \end{tabular}
      \\
      \hhline{|--|}
    \end{tabular}
  \end{center}
  \caption{Examples of keywords from the gazetteer for three categories}
  \label{tab:gazetteer}
\end{table}
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