user: Question: What number-one single is performed by artist Pep's?
Columns: ['Artist', 'Country', 'Number-one single(s)', 'Year', 'Weeks at #1', 'Straight to #1 ?']
Types: ['text', 'text', 'text', 'real', 'real', 'text']
Sample row: ['Paco', 'Viet Nam', '"Amor de mis amores"', 1988.0, 5.0, 'No']
SQL:

assistant: SELECT "Number-one single(s)" FROM "Table" WHERE "Artist" = 'Pep''s';