Conversation so far:
What was Arthur Miller's first play?
The Man Who Had All the Luck.
When did he write The Man Who Had All the Luck?
1940.
What was the play about?
CANNOTANSWER.
How did the play do?
won the Theatre Guild's National Award.
Did he do anything else in 1940?
In 1940, Miller married Mary Grace Slattery.
Did the couple have any children?
The couple had two children, Jane and Robert (born May 31, 1947).
Are they identical twins?
CANNOTANSWER.
What other plays did he make in his early career?
All My Sons.
How did the play do?
was a success on Broadway.
Did he win any awards for his work?
earning him his first Tony Award, for Best Author.

Question: What play earned him his first Tony Award?
Self-contained rewrite: What Play earned Arthur Miller his first Tony Award?