Patrick Winston of MIT has died (reported 2019-07-19).

True: an MIT announcement, an obituary or reliable news reports confirm that Patrick Winston of MIT died on or shortly before 19 July 2019. Mostly true: his death is confirmed, but a minor detail is off (for example the date of death was a few days earlier than the report). False: evidence shows Patrick Winston was alive on 19 July 2019.

Set before the research began.

1. E1 Professor Patrick Winston, former director of MIT’s Artificial Intelligence Laboratory, dies at 76 MIT News · 19 July 2019

   “Patrick Winston, a beloved professor and computer scientist at MIT, died on July 19 at Massachusetts General Hospital in Boston. He was 76.”

2. E2 Professor Patrick Winston dies at 76 | The Tech The Tech (MIT student newspaper) · 23 July 2019

   “Patrick Winston ’65, Ford professor of artificial intelligence and computer science, died July 19 at Massachusetts General Hospital in Boston at the age of 76.”

MIT News published an obituary on 2019-07-19 saying Patrick Winston died on July 19, aged 76 (E1). The Tech, MIT's student newspaper, gives the same date (E2). That matches the claim made on 2019-07-19 that he had died.