user: Question: Which is located in Angola and entered service in 1988?
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 "Name" FROM "Table" WHERE "Location" = 'Angola' AND "Entered service" = '1988';