URL or sameAs for linking to a person’s profile page?

Hi,

Just after a bit of advice. When marking up a list of people (i.e. a staff
list) and each item in that list contains a link to that individual’s
detail page, should that link have an itemprop value of url or sameAs?

Kind regards

-- 
*Martin Bean*
Web developer, consultant, author, and speaker

*Website:* martinbean.co.uk
*Twitter:* @martinbean <http://twitter.com/martinbean>
*LinkedIn:* http://www.linkedin.com/in/martinbean
*Skype:* mcbwebdesign