Conversation so far:
What is Crewe Alexandra and its connection with Dario Gradi?
Dario Gradi returned to management on 9 June 1983, when he accepted an offer to manage Crewe Alexandra, a football club.
What country is Crewe Alexandra in?
Crewe Alexandra Football Club is a professional association football club based in the town of Crewe, Cheshire, England.
How did Crewe Alexandra Football Club fare under Dario Gradi?
In 1988/89, after six seasons of steady progress, Crewe Alexandra Football Club won promotion to end 25 years in the league's basement division.
How did Crewe Alexandra Football Club do after the division promotion?
Gradi signed a then unheard of ten-year contract with Crewe Alexandra Football Club.

Question: How long were they in Division One?
Self-contained rewrite: How long were Crewe Alexandra Football Club in Division One?