user: Question: What is the water depth of Sedco 702, located in Nigeria?
Columns: ['Name', 'Type', 'Entered service', 'Water depth', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Deepwater Navigator', 'ship', '2000', 'ft (m)', 'Brazil']
SQL:

assistant: SELECT "Water depth" FROM "Table" WHERE "Location" = 'Nigeria' AND "Name" = 'Sedco 702';