/usr/share/man/man1/mips64el-linux-gnuabi64-gnathtml.1.gz is in gnat-6-mips64el-linux-gnuabi64 6.3.0-18cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/mips64el-linux-gnuabi64-gnat-6.1.gz