user: Question: What is the Market Share that has Assets of 25 Million and a rank of 23?
Columns: ['Rank', 'Bank', 'Assets (USD) Millions', 'Market Share', 'Number of Branches']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['1', 'Stanbic Bank', 1213.0, '19.9%', 91.0]
SQL:

assistant: SELECT "Market Share" FROM "Table" WHERE "Assets (USD) Millions" = 25.0 AND "Rank" = '23';