When was Shannon Long the Centerfold model?
CREATE TABLE table_name_15 (date VARCHAR, centerfold_model VARCHAR)
SELECT date FROM table_name_15 WHERE centerfold_model = "shannon long"
### Context: CREATE TABLE table_name_15 (date VARCHAR, centerfold_model VARCHAR) ### Question: When was Shannon Long the Centerfold model? ### Answer: SELECT date FROM table_name_15 WHERE centerfold_model = "shannon long"