CREATE TABLE table_21702 ("Class" TEXT, "Part 1" TEXT, "Part 2" TEXT, "Part 3" TEXT, "Part 4" TEXT, "Verb meaning" TEXT)

In what class does the verb with part 4 gelopen belong to?
SELECT "Class" FROM table_21702 WHERE "Part 4" = 'gelopen'
SELECT "Class" FROM "table_21702" WHERE "Part 4" = 'gelopen'