Conversation so far:
Who did Tom Simpson move to Paris with?
In April Tom Simpson moved to the Porte de Clichy district of Paris, sharing a small apartment with his teammate Robinson.
What did Tom Simpson do in Paris?
Days after his move, Tom Simpson rode in Paris–Roubaix, known as The Hell of the North, the first cycling race to be shown live on Eurovision.

Question: How long did Tom stay in Paris?
Self-contained rewrite: How long did Tom Simpson stay in Paris?