user: Question: Which Liberal leader has Seats won smaller than 100, and Seats in House of 215, and a % of popular vote of 43.1%?
Columns: ['Year', 'Seats in House', 'Liberal candidates', 'Seats won', 'Seat Change', 'Popular vote', '% of popular vote', 'Result', 'Liberal leader']
Types: ['text', 'real', 'real', 'real', 'text', 'real', 'text', 'text', 'text']
Sample row: ['1867', 180.0, 65.0, 62.0, '+62', 60818.0, '22.7%', 'Cons. majority', 'Brown']
SQL:

assistant: SELECT "Liberal leader" FROM "Table" WHERE "Seats won" < 100.0 AND "Seats in House" = 215.0 AND "% of popular vote" = '43.1%';