user: Question: What is the total number of Year(s), when Trailing Party is "indian national congress", and when Trailing Party % Votes is "27.42%"?
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 COUNT("Year") FROM "Table" WHERE "Trailing Party" = 'indian national congress' AND "Trailing Party % votes" = '27.42%';