/usr/share/java/uima-SnowballAnnotator-2.3.1.jar is in libuima-addons-java 2.3.1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/uima-SnowballAnnotator.jar
/usr/share/java/uima-SnowballAnnotator.jar