\begin{overpic}[width=0.49\textwidth]{main-building-127}
\put(1,74){\colorbox{white}{(\sublabel{main-building-127}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20160118145948-943180}{main-building-127}}}
%%(\subref{main-building-127}) \href{main-building-127}
\color{red}
\end{overpic}
<?xml version="1.0" encoding="UTF-8"?>
<acquisitions>
</acquisitions>