user: Question: What was the class when part 3 was *heldun?
Columns: ['Class', 'Part 1', 'Part 2', 'Part 3', 'Part 4']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['7a', '*haitaną', '*hēt', '*hētun', '*haitanaz']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Part 3" = '*heldun';