user: Question: What is the lowest number of dances with a rank larger than 4 and a place of 8?
Columns: ['Rank by average', 'Place', 'Couple', 'Total points', 'Number of dances', 'Average']
Types: ['real', 'real', 'text', 'real', 'real', 'real']
Sample row: [1.0, 1.0, 'Apolo & Julianne', 412.0, 15.0, 27.5]
SQL:

assistant: SELECT MIN("Number of dances") FROM "Table" WHERE "Rank by average" > 4.0 AND "Place" = 8.0;