instruction: What is Cabinet, when Year is after 1981, when Fractievoorzitter is 'Hans Van Mierlo', and when Chair is 'W.I.J.M. Vrijhoef'?
response: SELECT "Cabinet" FROM table_9583 WHERE "Year" > '1981' AND "Fractievoorzitter" = 'hans van mierlo' AND "Chair" = 'w.i.j.m. vrijhoef'