user: Question: What is Lenth Feet, when Mi From Kingston is greater than 84.5, when Length Meters is greater than 55.5, and when Name is Unnamed?
Columns: ['Name', 'Mi from Kingston', 'Km from Kingston', 'Parish', 'Length feet', 'Length meters']
Types: ['text', 'real', 'real', 'text', 'real', 'real']
Sample row: ['Scotts Pass', 44.25, 71.2, 'Clarendon', 70.0, 21.3]
SQL:

assistant: SELECT "Length feet" FROM "Table" WHERE "Mi from Kingston" > 84.5 AND "Length meters" > 55.5 AND "Name" = 'Unnamed';