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:
| Year | Entrant | Chassis | Engine | Points |
| --- | --- | --- | --- | --- |
| 1950.0 | Scuderia Milano | Maserati 4CLT/50 | Maserati Straight-4 | 2.0 |
| 1950.0 | Scuderia Milano | Milano Speluzzi | Maserati Straight-4 | 2.0 |
| 1951.0 | Alfa Romeo SpA | Alfa Romeo 159A | Alfa Romeo Straight-8 | 7.0 |
| 1951.0 | Alfa Romeo SpA | Alfa Romeo 159M | Alfa Romeo Straight-8 | 7.0 |
| 1952.0 | Officine Alfieri Maserati | Maserati A6GCM | Maserati Straight-6 | 2.0 |
| 1953.0 | Officine Alfieri Maserati | Maserati A6GCM | Maserati Straight-6 | 6.5 |
Question:
What is the chassis for a 1952 officine alfieri maserati with an entrant?
Answer:
Maserati A6GCM