/usr/share/java/uima-SnowballAnnotator.jar is in libuima-addons-java 2.3.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/org/apache/uima/SnowballAnnotator/2.3.1/SnowballAnnotator-2.3.1.jar