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 |
| --- | --- | --- | --- | --- |
| 1986.0 | Minardi Team | Minardi M185B | MM V6 | 0.0 |
| 1987.0 | Minardi Team | Minardi M187 | MM V6 | 0.0 |
| 1988.0 | Benetton Formula Ltd. | Benetton B188 | Cosworth V8 | 12.0 |
| 1989.0 | Benetton Formula Ltd. | Benetton B188 | Cosworth V8 | 32.0 |
| 1989.0 | Benetton Formula Ltd. | Benetton B189 | Ford V8 | 32.0 |
| 1990.0 | Benetton Formula Ltd. | Benetton B189B | Ford V8 | 21.0 |
| 1990.0 | Benetton Formula Ltd. | Benetton B190 | Ford V8 | 21.0 |
Question:
what's the earliest year that there was a cosworth v8 engine and 12 points?
Answer:
1988.0