\noindent
 \begin{minipage}[t]{\textwidth}
\centering
\begin{tabularx}{\textwidth}{|X|X|}
\hline
\relax [hell]   &  Hello   \\
\hline
\relax [there]  &  [here]  \\
\relax [here]  &  [there]  \\
\hline
\end{tabularx}

\medskip
[prova]

\medskip

\end{minipage}
