See https://forum.effectivealtruism.org/posts/u55Misp5ZjtkTQrXQ/ea-forum-prize-winners-for-june-2019#fDmiPdXBgA99oPp5g
See https://forum.effectivealtruism.org/posts/u55Misp5ZjtkTQrXQ/ea-forum-prize-winners-for-june-2019#fDmiPdXBgA99oPp5g