Conversation so far:
what did Getty do in J.
Paul Getty's later years?
Getty remained an inveterate hard worker, boasting at age 74 that he often worked 16 to 18 hours per day overseeing his operations across the world.
was he a wealthy man?
Getty enjoying personal earnings of $25.8 million in 1975 (appr.
$120 million in 2018 USD).
was he married?
CANNOTANSWER.

Question: what was his greatest accomplishment?
Self-contained rewrite: What was J. Paul Getty's greatest accomplishment?