Question: When was the philosopher who worked on  An Essay Concerning Human Understanding born? 
Sentence (from "John Locke"): John Locke {'1': ", '2': ", '3': ", '4': "} ( ; 29 August 1632 – 28 October 1704) was an English philosopher and physician, widely regarded as one of the most influential of Enlightenment thinkers and commonly known as the "Father of Liberalism".
Relevant evidence: Yes