Question: Douglas Engelbart, presenter of the 'Mother of All demos' computer demonstration at the Association of Computing Machinery is best known for facilitating the development of which computer device in a precursor to graphical user interfaces?
Sentence (from "Douglas Engelbart"): Douglas Carl Engelbart (January 30, 1925 – July 2, 2013) was an American engineer and inventor, and an early computer and Internet pioneer.
Relevant evidence: Yes