\begin{overpic}[width=0.49\textwidth]{6619c60}
\put(1,74){\colorbox{white}{(\sublabel{6619c60}) \href{http://dream.misasa.okayama-u.ac.jp/?q=20120713092618-999-794}{6619c60}}}
%%(\subref{6619c60}) \href{6619c60}
\color{red}
\end{overpic}
<?xml version="1.0" encoding="UTF-8"?>
<acquisitions>
</acquisitions>