/usr/lib/x86_64-linux-gnu/libSGE.so.0 is in libsdl-sge 030809dfsg-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libSGE.so.0.030809
/usr/lib/x86_64-linux-gnu/libSGE.so.0.030809