<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/980x551/548b58445d18c_-_iage-rules-no-longer-apply-marriage-more-than-two-people-s2.jpg>
<http://www.redbookmag.com/love-sex/relationships/advice/g1734/marriage-rules/>