CREATE TABLE table_38939 ("Team" CLOB, "Constructor" CLOB, "Motorcycle" CLOB, "Rider" CLOB, "Rounds" CLOB)

What rounds did rider Mika Kallio with a Ducati constructor have?
SELECT "Rounds" FROM table_38939 WHERE "Constructor" = 'ducati' AND "Rider" = 'mika kallio'
SELECT "Rounds" FROM "table_38939" WHERE "Constructor" = 'ducati' AND "Rider" = 'mika kallio'