<https://forum.effectivealtruism.org/posts/WvPEitTCM8ueYPeeH/donor-lotteries-demonstration-and-faq>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.effectivealtruism.org/posts/WvPEitTCM8ueYPeeH/donor-lotteries-demonstration-and-faq>