In how many different years did schools located in Logan Township, Pennsylvania join the Conference?
CREATE TABLE table_1971074_1 (joined VARCHAR, location VARCHAR)
SELECT COUNT(joined) FROM table_1971074_1 WHERE location = "Logan Township, Pennsylvania"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1971074_1 (joined VARCHAR, location VARCHAR) Question: In how many different years did schools located in Logan Township, Pennsylvania join the Conference? [/INST] SELECT COUNT(joined) FROM table_1971074_1 WHERE location = "Logan Township, Pennsylvania" </s>