/usr/share/man/man1/ is in gnat-8 8-20180414-1ubuntu2.
This file is owned by root:root, with mode 0o755.
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/usr/share/man/man1/x86_64-linux-gnu-gnat-8.1.gz
/usr/share/man/man1/gnatkr.1.gz
/usr/share/man/man1/gnatkr-8.1.gz
/usr/share/man/man1/gnatlink-8.1.gz
/usr/share/man/man1/gnatlink.1.gz
/usr/share/man/man1/gnatls-8.1.gz
/usr/share/man/man1/gnatls.1.gz
/usr/share/man/man1/gnatmake-8.1.gz
/usr/share/man/man1/gnatmake.1.gz
/usr/share/man/man1/gnatname-8.1.gz
/usr/share/man/man1/gnatname.1.gz
/usr/share/man/man1/gnatprep-8.1.gz
/usr/share/man/man1/gnatprep.1.gz
/usr/share/man/man1/gnatxref-8.1.gz
/usr/share/man/man1/gnatxref.1.gz
/usr/share/man/man1/gnat-8.1.gz
/usr/share/man/man1/gnat.1.gz
/usr/share/man/man1/gnatbind-8.1.gz
/usr/share/man/man1/gnatbind.1.gz
/usr/share/man/man1/gnatchop-8.1.gz
/usr/share/man/man1/gnatchop.1.gz
/usr/share/man/man1/gnatclean-8.1.gz
/usr/share/man/man1/gnatclean.1.gz
/usr/share/man/man1/gnatfind-8.1.gz
/usr/share/man/man1/gnatfind.1.gz
/usr/share/man/man1/gnatgcc.1.gz
/usr/share/man/man1/gnathtml-8.1.gz
/usr/share/man/man1/gnathtml.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnat.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatbind-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatbind.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatchop-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatchop.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatclean-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatclean.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatfind-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatfind.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatgcc.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnathtml-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnathtml.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatkr-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatkr.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatlink-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatlink.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatls-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatls.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatmake-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatmake.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatname-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatname.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatprep-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatprep.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatxref-8.1.gz
/usr/share/man/man1/x86_64-linux-gnu-gnatxref.1.gz