/usr/lib/scilab/libsciui_data.so.5 is in scilab-full-bin 5.5.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/scilab/libsciui_data.so.5.5.0
/usr/lib/scilab/libsciui_data.so.5.5.0