Man pages matching name gnat in section 1:

gnat.1.en	debian 10 / gnat-7
gnat.1.en	debian 10 / gnat-8
gnat.1.en	debian 11 / gnat-10
gnat.1.en	debian 11 / gnat-9
gnat.1.en	debian 12 / gnat-11
gnat.1.en	debian 12 / gnat-12