user: ### NOW ANSWER:
Question: What is the # of lanes on 20th Street?
Columns: ['Street', 'West', 'East', '# of lanes', 'Traffic direction']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1st Street', 'Hoyt Street', 'Prospect Park West', '1', 'East']
SQL:

assistant: SELECT "# of lanes" FROM "Table" WHERE "Street" = '20th Street';