What country did Gil play against on 21–23 september 2007?
CREATE TABLE table_18042031_16 (against VARCHAR, date VARCHAR)
SELECT against FROM table_18042031_16 WHERE date = "21–23 September 2007"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18042031_16 (against VARCHAR, date VARCHAR) Question: What country did Gil play against on 21–23 september 2007? [/INST] SELECT against FROM table_18042031_16 WHERE date = "21–23 September 2007" </s>