What was important, what was tricky

important:

• mixing namespaces
• using Creative Commons
• attribution
• identification of people and events

tricky:

• identification of people and events
• location; 'creationevent': where the photo was taken, where the photo was taken of
• annotation properties
• reusing or creating a new vocabulary? owl: doesn't matter; rdf/rdfs tools: can matter a lot
• validation; e.g. if there's a person, the person must have an identifier (email, mbox_sha1sum, url, weblog, name) (OWL?) -- further work
• identifying people, events
• (potentially) legal issues