I used information from Science Daily: https://www.sciencedaily.com/releases/2017/01/170123115741.htm and The Washington Post: https://www.washingtonpost.com/news/monkey-cage/wp/2016/09/14/a-politician-walks-into-a-joke-stop-me-if-youve-heard-this-one/?noredirect=on&utm_term=.00a8463f3a1b