Conversation so far:
Who did Cooper become friends with?
Cooper's twenty-year friendship with Ernest Hemingway began at Sun Valley in October 1940.
How did he become friends with Hemingway?
The two shared a passion for the outdoors.
Where did they meet?
Sun Valley.
What were some of Cooper's interests?
for years they hunted duck and pheasant, and skied together.

Question: Did he have any other interests?
Self-contained rewrite: Other than skiing, duck and pheasant hunting, did Gary Cooper have any other interests?