user: Question: What is the highest elevation for the highest point of Schnebelhorn?
Columns: ['Rank', 'Canton', 'Highest point', 'Highest elevation', 'Lowest point', 'Lowest elevation']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Valais', 'Monte Rosa (Dufourspitze)', 'm (ft)', 'Lake Geneva', 'm (ft)']
SQL:

assistant: SELECT "Highest elevation" FROM "Table" WHERE "Highest point" = 'Schnebelhorn';