user: Question: Which Year has an Album of Airwaves, and a US Hot 100 of –?
Columns: ['Year', 'Song', 'US Hot 100', 'UK Singles', 'Album']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1969.0, '" Maybe Tomorrow "', '67', '–', 'Maybe Tomorrow']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Album" = 'Airwaves' AND "US Hot 100" = '–';