| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Irish International Grand Prix - Winners of the Irish International Grand Prix Races |  |  |  |  |
| 3 | Year | Circuit | Race | Driver | Constructor |
| 4 | 1929 | Phoenix Park | Saorstát Cup | Boris Ivanowski | Alfa Romeo 6C |
| 5 | 1929 | Phoenix Park | Éireann Cup | Boris Ivanowski | Alfa Romeo 6C |
| 6 | 1929 | Phoenix Park | Irish Grand Prix | Boris Ivanowski | Alfa Romeo 6C |
| 7 | 1930 | Phoenix Park | Saorstát Cup | Victor Gillow | Riley 9 Brooklands |
| 8 | 1930 | Phoenix Park | Éireann Cup | Rudolf Caracciola | Mercedes SSK |
| 9 | 1930 | Phoenix Park | Irish Grand Prix | Rudolf Caracciola | Mercedes SSK |
| 10 | 1931 | Phoenix Park | Saorstát Cup | Norman Black | MG Midget |
| 11 | 1931 | Phoenix Park | Éireann Cup | Henry Birkin | Alfa Romeo 8C |
| 12 | 1931 | Phoenix Park | Irish Grand Prix | Norman Black | MG Midget |

Question: In 1929, what race did Boris Ivanowski compete in and who was the constructor?
Answer: The first year of the Irish International Grand Prix event was 1929, when Boris Ivanowski raced and won both the Saorstát Cup and Éireann Cup races. He drove an Alfa Romeo to claim the inaugural Irish Grand Prix.