user: Question: How many areas are there for the corporation named Fort St. John, City of?
Columns: ['Name', 'Corporate name', 'Regional district', 'Incorporation date (city)', 'Population (2011)', 'Population (2006)', 'Change (%)', 'Area (km²)', 'Population density']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text', 'text', 'text']
Sample row: ['Abbotsford', 'Abbotsford, City of', 'Fraser Valley', 'December 12, 1995', 133497.0, 124258.0, '7.4', '375.55', '355.5']
SQL:

assistant: SELECT COUNT("Area (km²)") FROM "Table" WHERE "Corporate name" = 'Fort St. John, City of';