user: Question: What was the number of athletes in the host city of Nice?
Columns: ['Edition', 'Year', 'Host city', 'Host country', 'Date', 'No. of athletes', 'Nations']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1st', 2001.0, 'Nice', 'France', '9–10 March', '80 men/71 women', 21.0]
SQL:

assistant: SELECT "No. of athletes" FROM "Table" WHERE "Host city" = 'Nice';