/usr/share/games/minetest/mods/mobf/barn/locale/template.txt is in minetest-mod-mobf-core 2.5.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # Template
Barn to breed animals =
Barn to breed small animals =
|