What was the diameter of the feature found in 1997?
CREATE TABLE table_16799784_3 (diameter__km_ VARCHAR, year_named VARCHAR)
SELECT diameter__km_ FROM table_16799784_3 WHERE year_named = 1997
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_16799784_3 (diameter__km_ VARCHAR, year_named VARCHAR) Question: What was the diameter of the feature found in 1997? [/INST] SELECT diameter__km_ FROM table_16799784_3 WHERE year_named = 1997 </s>