user: Question: What is the name of the location and ship type in the Gulf of Mexico that entered service in 1999?
Columns: ['Name', 'Type', 'Entered service', 'Water depth', 'Location', 'Customer']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Cajun Express', 'semi', '2001', 'ft (m)', 'Brazil', 'Petrobras']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "Location" = 'Gulf of Mexico' AND "Type" = 'ship' AND "Entered service" = '1999';