<https://jameshoward.us/2015/10/07/youre-out-of-order-the-whole-operations-out-of-order/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jameshoward.us/2015/10/07/youre-out-of-order-the-whole-operations-out-of-order/>