2016-10-24 UTC
# 
tantek that is, p-location is the location a post was published, whereas u-category is used for tagging what a post is about, and thus we have u-category h-card for person-tags, but if the h-card is a venue, then the post is about a venue as well, or u-category h-adr (h-geo or geo: URL) would convey that the post is about a specific address (or geo accordingly!)