What is the main use for the structure listed in walker city, iowa?
CREATE TABLE table_name_25 (main_use VARCHAR, town VARCHAR)
SELECT main_use FROM table_name_25 WHERE town = "walker city, iowa"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_25 (main_use VARCHAR, town VARCHAR) Question: What is the main use for the structure listed in walker city, iowa? [/INST] SELECT main_use FROM table_name_25 WHERE town = "walker city, iowa" </s>