/usr/ is in libantlr3-gunit-java 3.5.2-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/
/usr/share/maven-repo/org/
/usr/share/java/
/usr/share/
/usr/share/maven-repo/org/antlr/
/usr/share/maven-repo/org/antlr/gunit/
/usr/share/maven-repo/org/antlr/gunit/3.x/
/usr/share/maven-repo/org/antlr/gunit/3.x/gunit-3.x.pom
/usr/share/maven-repo/org/antlr/gunit/3.5.2/
/usr/share/maven-repo/org/antlr/gunit/3.5.2/gunit-3.5.2.jar
/usr/share/maven-repo/org/antlr/gunit/3.5.2/gunit-3.5.2.pom
/usr/share/doc/
/usr/share/doc/libantlr3-gunit-java/
/usr/share/doc/libantlr3-gunit-java/copyright
/usr/share/java/antlr3-gunit.jar
/usr/share/maven-repo/org/antlr/gunit/3.x/gunit-3.x.jar
/usr/share/doc/libantlr3-gunit-java/changelog.Debian.gz