This is an hCard; it comes from a 1998 review comment on P3P:
The proposed breakdown of a person's name doesn't fit everybody. For example, the previous Dutch minister of foreign affairs is called Dr. H.A.F.M.O van Mierlo: his title is "Dr.", he's known as "Hans", his last name is "Mierlo", prefix is "van", he has 5 first names, and no middle one. His most common nickname is "Hafmo".