user: Question: What is the class of vessel of the ship Hyundai Smart?
Columns: ['Vessel Name', 'Type', 'Built', 'Class', 'Flag']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Hyundai Advance', 'Panamax', 1997.0, 'KR', 'Panama']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Vessel Name" = 'Hyundai Smart';