/usr/lib/x86_64-linux-gnu/libSGE.so is in libsdl-sge-dev 030809dfsg-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libSGE.so.0
/usr/lib/x86_64-linux-gnu/libSGE.so.0