user: Question: what was the lowest elevation in April 2006?
Columns: ['Year', 'Summits', 'Country', 'Continent', 'Elevation ft', 'Elevation m']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['April 2006', 'Mount Kilimanjaro', 'Tanzania', 'Africa', 19340.0, 5892.0]
SQL:

assistant: SELECT MIN("Elevation ft") FROM "Table" WHERE "Year" = 'April 2006';