user: Question: What is the U.S. Rap chart number of the album West Coast Bad Boyz, Vol. 3: Poppin' Collars?
Columns: ['Year', 'U.S. Hot 100', 'U.S. R&B', 'U.S. Rap', 'Album']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1995.0, '—', '—', '—', "Down South Hustlers: Bouncin' and Swingin'"]
SQL:

assistant: SELECT "U.S. Rap" FROM "Table" WHERE "Album" = 'West Coast Bad Boyz, Vol. 3: Poppin'' Collars';