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 |
| --- | --- | --- | --- | --- |
| 1953.0 | Équipe Gordini | Gordini Type 16 | Gordini Straight-6 | 0.0 |
| 1954.0 | Roberto Mieres | Maserati A6GCM | Maserati Straight-6 | 6.0 |
| 1954.0 | Roberto Mieres | Maserati 250F | Maserati Straight-6 | 6.0 |
| 1954.0 | Officine Alfieri Maserati | Maserati 250F | Maserati Straight-6 | 6.0 |
| 1955.0 | Officine Alfieri Maserati | Maserati 250F | Maserati Straight-6 | 7.0 |
Question:
What entrant had a chassis of Maserati 250f in 1954?
Answer:
Roberto Mieres, Officine Alfieri Maserati