user: Question: Who wrote the episode with 7.52 million US viewers?
Columns: ['#', 'Episode', 'Directed by', 'Written by', 'U.S. Viewers (in millions)', 'Original airdate']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Insight"', 'John Patterson', 'Cynthia Saunders', '13.53', 'September21,1996']
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "U.S. Viewers (in millions)" = '7.52';