What was the altitude of the explosion Hardtack Teak?
CREATE TABLE table_148578_1 (altitude__km_ VARCHAR, explosion VARCHAR)
SELECT altitude__km_ FROM table_148578_1 WHERE explosion = "Hardtack Teak"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_148578_1 (altitude__km_ VARCHAR, explosion VARCHAR) Question: What was the altitude of the explosion Hardtack Teak? [/INST] SELECT altitude__km_ FROM table_148578_1 WHERE explosion = "Hardtack Teak" </s>