Question: What is the date of death of Robert Garriott's father?
Sentence (from "Owen Garriott"): Owen Kay Garriott (November 22, 1930 – April 15, 2019) was an American electrical engineer and NASA astronaut, who spent 60 days aboard the Skylab space station in 1973 during the Skylab 3 mission, and 10 days aboard Spacelab-1 on a Space Shuttle mission in 1983.
Relevant evidence: Yes