What is the dma when the format is rhythmic contemporary?
CREATE TABLE table_19131921_1 (dma INTEGER, format VARCHAR)
SELECT MIN(dma) FROM table_19131921_1 WHERE format = "Rhythmic Contemporary"
### Context: CREATE TABLE table_19131921_1 (dma INTEGER, format VARCHAR) ### Question: What is the dma when the format is rhythmic contemporary? ### Answer: SELECT MIN(dma) FROM table_19131921_1 WHERE format = "Rhythmic Contemporary"