Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Event | Gold | Silver | Bronze | 4th place |
| --- | --- | --- | --- | --- |
| Flyweight (– 51 kilograms) | Luis Martinez Zapata Spain | James Clinton Scotland | Frantisek Majdloch Czechoslovakia | I. Bendai Hungary |
| Bantamweight (– 54 kilograms) | Laszlo Bogacs Hungary | Bertil Ahlin Sweden | Peter Sanderson England | Duayer Scotland |
| Featherweight (– 58 kilograms) | Kurt Kreuger Sweden | Peter Maguire Ireland | Jules van Dyk Belgium | J Feher Hungary |
| Lightweight (– 62 kilograms) | Joseph Vissers Belgium | Roger Baour France | Svend Wad Denmark | E. Frich Scotland |
| Welterweight (– 67 kilograms) | John Ryan England | Charles Humez France | Giuseppe Facchi Italy | Eddie Cantwell Ireland |
| Middleweight (– 73 kilograms) | Aimé-Joseph Escudie France | Wally Thom England | Julius Torma Czechoslovakia | Shubert Netherlands |
| Light Heavyweight (– 80 kilograms) | Hennie Quentemeijer Netherlands | Léon Nowiaz France | Vital L'Hoste Belgium | C.Waist England |
| Heavyweight (+ 80 kilograms) | Gerry O'Colman Ireland | George Scriven England | Giulio Bastiani Italy | Livanski Czechoslovakia |
Question:
Who won the gold when Bertil Ahlin Sweden won the silver?
Answer:
Laszlo Bogacs Hungary