user: ### NOW ANSWER:
Question: What is the Year of the Coin with an Issue Price of $1089.95 and Mintage less than 900?
Columns: ['Year', 'Theme', 'Face Value', 'Weight', 'Diameter', 'Mintage', 'Issue Price']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [2006.0, 'Dog sled', 'Thirty dollars', '31.50 g', '40mm', 15000.0, '$89.95']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Issue Price" = '$1089.95' AND "Mintage" < 900.0;