/usr/share/ is in mythes-fr 1:5.1.0-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/mythes/
/usr/share/mythes/thes_fr.idx
/usr/share/mythes/thes_fr.dat
/usr/share/doc/
/usr/share/doc/mythes-fr/
/usr/share/doc/mythes-fr/copyright
/usr/share/doc/mythes-fr/changelog.Debian.gz
/usr/share/mythes/th_fr_CA_v2.dat
/usr/share/mythes/th_fr_MC_v2.dat
/usr/share/mythes/th_fr_FR_v2.dat
/usr/share/mythes/th_fr_CH_v2.idx
/usr/share/mythes/th_fr_LU_v2.idx
/usr/share/mythes/th_fr_BE_v2.dat
/usr/share/mythes/th_fr_CH_v2.dat
/usr/share/mythes/th_fr_MC_v2.idx
/usr/share/mythes/th_fr_LU_v2.dat
/usr/share/mythes/th_fr_FR_v2.idx
/usr/share/mythes/th_fr_CA_v2.idx
/usr/share/mythes/th_fr_BE_v2.idx