Conversation so far:
Where did John Denver grow up?
John Denver was raised in Carswell AFB in Fort Worth, Texas and graduated from Arlington Heights High School.
Was John Denver ever married?
John Denver's first marriage was to Anne Martell of St. Peter, Minnesota.
Did John Denver and Anne Martell have children together?
John Denver and Anne Martell adopted a boy, Zachary John, and a girl, Anna Kate.
Are there any other interesting aspects about John Denver's personal life besides where he grew up, marrying Anne Martell, and adopting two children?
John Denver and Anne Denver divorced in 1982.

Question: What event lead up to this?
Self-contained rewrite: What event lead up to John Denver's and Anne Denver's divorce in 1982?