\begin{overpic}[width=0.49\textwidth]{tixhr-1793198789}
\put(1,74){\colorbox{white}{(\sublabel{tixhr-1793198789}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20141125090020-681546}{tixhr-1793198789}}}
%%(\subref{tixhr-1793198789}) \href{tixhr-1793198789}
\color{red}
\end{overpic}
<?xml version="1.0" encoding="UTF-8"?>
<acquisitions>
</acquisitions>