\begin{overpic}[width=0.49\textwidth]{tixhr-1155554740}
\put(1,74){\colorbox{white}{(\sublabel{tixhr-1155554740}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20151127084048-838786}{tixhr-1155554740}}}
%%(\subref{tixhr-1155554740}) \href{tixhr-1155554740}
\color{red}
\end{overpic}
<?xml version="1.0" encoding="UTF-8"?>
<acquisitions>
</acquisitions>