user: Question: What is the US cash box before 1978 with a US billboard of 35?
Columns: ['Year', 'US Billboard', 'US Cash Box', 'US AC', 'CAN AC', 'Title']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1972.0, 86.0, '90', '–', '–', '"Don\'t Want to Say Goodbye"']
SQL:

assistant: SELECT "US Cash Box" FROM "Table" WHERE "Year" < 1978.0 AND "US Billboard" = 35.0;