user: Question: What's the total attendance for H/a of a and opponents of wolverhampton wanderers?
Columns: ['Date', 'Opponents', 'H / A', 'Result F – A', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['30 July 1994', 'Dundalk', 'A', '4 – 2', 4500.0]
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "H / A" = 'a' AND "Opponents" = 'wolverhampton wanderers';