user: Question: how heavy is the  maximum
Columns: ['Name', 'Japanese', 'Length', 'Max. speed', 'per lift', 'per hour', 'Built']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['West Gondola', 'ウエストゴンドラ', '1,104m (3,622ft)', '4.0m/s (13.1ft/s)', 4.0, '1,200', 'November 1983']
SQL:

assistant: SELECT MAX("per lift") FROM "Table";