/usr/share/doc/bulletml/sample/ is in libbulletml-dev 0.0.6-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/bulletml/sample/[1943]_rolling_fire.xml
/usr/share/doc/bulletml/sample/[G_DARIUS]_homing_laser.xml
/usr/share/doc/bulletml/sample/[Guwange]_round_2_boss_circle_fire.xml
/usr/share/doc/bulletml/sample/[Guwange]_round_3_boss_fast_3way.xml
/usr/share/doc/bulletml/sample/[Guwange]_round_4_boss_eye_ball.xml
/usr/share/doc/bulletml/sample/[Progear]_round_1_boss_grow_bullets.xml
/usr/share/doc/bulletml/sample/[Progear]_round_2_boss_struggling.xml
/usr/share/doc/bulletml/sample/[Progear]_round_3_boss_back_burst.xml
/usr/share/doc/bulletml/sample/[Progear]_round_3_boss_wave_bullets.xml
/usr/share/doc/bulletml/sample/[Progear]_round_4_boss_fast_rocket.xml
/usr/share/doc/bulletml/sample/[Progear]_round_5_boss_last_round_wave.xml
/usr/share/doc/bulletml/sample/[Progear]_round_5_middle_boss_rockets.xml
/usr/share/doc/bulletml/sample/[Progear]_round_6_boss_parabola_shot.xml
/usr/share/doc/bulletml/sample/[Psyvariar]_X-A_boss_opening.xml
/usr/share/doc/bulletml/sample/[Psyvariar]_X-A_boss_winder.xml
/usr/share/doc/bulletml/sample/[Psyvariar]_X-B_colony_shape_satellite.xml
/usr/share/doc/bulletml/sample/[XEVIOUS]_garu_zakato.xml
/usr/share/doc/bulletml/sample/template.xml