Before the Year 1972, what RIAA Sales Certification was awarded to the song that had a Billboard 200 Peak less than 18?
CREATE TABLE table_name_50 (riaa_sales_certification VARCHAR, billboard_200_peak VARCHAR, year VARCHAR)
SELECT riaa_sales_certification FROM table_name_50 WHERE billboard_200_peak < 18 AND year < 1972
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_50 (riaa_sales_certification VARCHAR, billboard_200_peak VARCHAR, year VARCHAR) Question: Before the Year 1972, what RIAA Sales Certification was awarded to the song that had a Billboard 200 Peak less than 18? [/INST] SELECT riaa_sales_certification FROM table_name_50 WHERE billboard_200_peak < 18 AND year < 1972 </s>