/usr/lib/x86_64-linux-gnu/libgom-1.0.so is in libgom-1.0-dev 0.3.3-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgom-1.0.so.0
/usr/lib/x86_64-linux-gnu/libgom-1.0.so.0