What is the margin when periyakulam is the constituency?
CREATE TABLE table_22754491_1 (margin VARCHAR, constituency VARCHAR)
SELECT margin FROM table_22754491_1 WHERE constituency = "Periyakulam"
### Context: CREATE TABLE table_22754491_1 (margin VARCHAR, constituency VARCHAR) ### Question: What is the margin when periyakulam is the constituency? ### Answer: SELECT margin FROM table_22754491_1 WHERE constituency = "Periyakulam"