CREATE TABLE table_204_295 (id DECIMAL, "model" TEXT, "origin" TEXT, "type" TEXT, "version" TEXT, "in service" DECIMAL, "notes" TEXT)

of which utility vehicle model do they have more than 50 in service ?
SELECT "model" FROM table_204_295 WHERE "in service" >= 50
SELECT "model" FROM "table_204_295" WHERE "in service" >= 50