user: Question:  how many canton with commune being Waldbillig
Columns: ['Map Key', 'Commune', 'Canton', 'District', 'Population']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Beaufort', 'Echternach', 'Grevenmacher', 2180.0]
SQL:

assistant: SELECT COUNT("Canton") FROM "Table" WHERE "Commune" = 'Waldbillig';