user: Question: Were the color commentators who worked with Bill Hewitt doing the play-by-play?
Columns: ['Year', 'Network', 'Play-by-play', 'Colour commentator(s)', 'Studio host']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1969.0, 'CBC', 'Danny Gallivan', 'Dick Irvin, Jr.', 'Ward Cornell']
SQL:

assistant: SELECT "Colour commentator(s)" FROM "Table" WHERE "Play-by-play" = 'Bill Hewitt';