user: Question: Name the name origin for 54.0E
Columns: ['Name', 'Latitude', 'Longitude', 'Diameter (km)', 'Year named', 'Name origin']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Adrasthea Tesserae', '30.0N', '55.0E', '750.0', 1997.0, 'Adrastea , Greek goddess of law .']
SQL:

assistant: SELECT "Name origin" FROM "Table" WHERE "Longitude" = '54.0E';