user: Question: What is the average silver medals a team ranked 12 with less than 2 bronze has?
Columns: ['Rank', 'Nation', 'Gold', 'Silver', 'Bronze', 'Total']
Types: ['real', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Russia', 8.0, 12.0, 10.0, 30.0]
SQL:

assistant: SELECT AVG("Silver") FROM "Table" WHERE "Rank" = 12.0 AND "Bronze" < 2.0;