/usr/share/link-grammar/en/words/units.1.dot is in link-grammar-dictionaries-en 4.7.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | in.u ins.u ft.u yd.u yds.u mi.u
lb.u lbs.u oz.u ozs.u
tbsp.u tsp.u pt.u qt.u gal.u bbl.u
sq.u
|