user: Question: Who was the runner-up (a) if K. P. Ramalingam won the election?
Columns: ['Constituency', 'Winner', 'Party', 'Margin', 'Runner-up a', 'Party a']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['1. Chennai North', 'N. V. N. Somu', 'Dravida Munnetra Kazhagam', 389617.0, 'D. Pandian', 'INC']
SQL:

assistant: SELECT "Runner-up a" FROM "Table" WHERE "Winner" = 'K. P. Ramalingam';