user: ### NOW ANSWER:
Question: Which # 100 has a Season of 1991, and an Against of Surrey?
Columns: ['# 100', 'Season', 'Playing For', 'Against', 'Score']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1980', 'Gloucestershire', 'Hampshire', '116']
SQL:

assistant: SELECT MAX("# 100") FROM "Table" WHERE "Season" = '1991' AND "Against" = 'Surrey';