<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://prima.cdnds.net/assets/15/24/1433811351-pp-how-to-knit-purl-steps300sq.jpg>
<http://www.prima.co.uk/craft/knitting-patterns/a21151/how-to-knit-for-beginners/>