user: ### NOW ANSWER:
Question: What is the average ARWU 2012 ranking of illinois, champaign, which has a USN 2013 ranking less than 91 and an EC 2013 ranking larger than 1000?
Columns: ['Location (State, City)', 'USN 2013', 'BW 2013', 'Forbes 2011', 'Ec 2013', 'FT 2011', 'AE 2011', 'CNN 2011', 'BI 2013', 'ARWU 2012']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Alabama, Auburn', 75.0, 1000.0, 1000.0, 1000.0, 1000.0, 1000.0, 1000.0, 1000.0, 1000.0]
SQL:

assistant: SELECT AVG("ARWU 2012") FROM "Table" WHERE "USN 2013" < 91.0 AND "Location (State, City)" = 'illinois, champaign' AND "Ec 2013" > 1000.0;