user: Question: What is Trailing Party % Votes, when Party Won is "Bharatiya Janta Party", and when Trailing Party is "Indian National Congress"?
Columns: ['Year', 'Lok Sabha', 'Members of Parliament', 'Party Won', "Winner's % votes", 'Trailing Party', 'Trailing Party % votes']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1951.0, '1st Lok Sabha', 'Mukund Lal Agrawal', 'Indian National Congress', '43.11%', 'Socialist Party', '22.58%']
SQL:

assistant: SELECT "Trailing Party % votes" FROM "Table" WHERE "Party Won" = 'Bharatiya Janta Party' AND "Trailing Party" = 'Indian National Congress';