create implication milky_way -> galaxy
The milky way is a galaxy. In the case of danbooru's definition, the band of stars seen in a starry sky still counts as galaxy (a definite conglomeration of stars visible from earth, in the case of the current usage of the galaxy tag).
There shouldn't be a case where the tag galaxy does not apply to any pic showing the milky way.
EDIT: This tag implication has been rejected because it was not approved within 60 days.
EDIT: The tag implication milky_way -> galaxy (forum #142508) has been rejected by @DanbooruBot.
Updated by DanbooruBot