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:
| Round | Circuit | Date | Pole Position | Fastest Lap | Winning Driver | Winning Team |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Oulton Park | 24 March | Jaime Alguersuari | John Martin | Oliver Turvey | Carlin Motorsport |
| 2.0 | Oulton Park | 24 March | Jaime Alguersuari | Jaime Alguersuari | Jaime Alguersuari | Carlin Motorsport |
| 3.0 | Croft | 27 April | Marcus Ericsson | Max Chilton | Sergio Pérez | T-Sport |
| 4.0 | Croft | 27 April | Brendon Hartley | Sergio Pérez | Brendon Hartley | Carlin Motorsport |
| 5.0 | Monza | 17 May | Matteo Chinosi | Esteban Guerrieri | Sergio Pérez | T-Sport |
| 6.0 | Monza | 18 May | Max Chilton | Esteban Guerrieri | Sergio Pérez | T-Sport |
| 7.0 | Rockingham | 26 May | Max Chilton | Jaime Alguersuari | Atte Mustonen | Räikkönen Robertson Racing |
| 8.0 | Rockingham | 26 May | Jaime Alguersuari | Oliver Turvey | Sebastian Hohenthal | Fortec Motorsport |
| 9.0 | Snetterton | 8 June | Michael Devaney | Marcus Ericsson | Michael Devaney | Ultimate Motorsport |
| 10.0 | Snetterton | 8 June | Brendon Hartley | Jaime Alguersuari | Michael Devaney | Ultimate Motorsport |
| 11.0 | Thruxton | 29 June | Jaime Alguersuari | Marcus Ericsson | Brendon Hartley | Carlin Motorsport |
| 12.0 | Thruxton | 29 June | Brendon Hartley | Oliver Turvey | Brendon Hartley | Carlin Motorsport |
| 13.0 | Brands Hatch | 13 July | Jaime Alguersuari | Jaime Alguersuari | Jaime Alguersuari | Carlin Motorsport |
| 14.0 | Brands Hatch | 13 July | Marcus Ericsson | Marcus Ericsson | Sergio Pérez | T-Sport |
| 15.0 | Spa-Francorchamps | 1 August | Oliver Turvey | Brendon Hartley | Oliver Turvey | Carlin Motorsport |
| 16.0 | Spa-Francorchamps | 2 August | Oliver Turvey | Brendon Hartley | Brendon Hartley | Carlin Motorsport |
| 17.0 | Silverstone | 16 August | Oliver Turvey | Oliver Turvey | Oliver Turvey | Carlin Motorsport |
| 18.0 | Silverstone | 16 August | Brendon Hartley | Oliver Turvey | Oliver Turvey | Carlin Motorsport |
| 19.0 | Bucharest | 23 August | Brendon Hartley | Marcus Ericsson | Brendon Hartley | Carlin Motorsport |
| 20.0 | Bucharest | 24 August | Oliver Turvey | Brendon Hartley | Jaime Alguersuari | Carlin Motorsport |
| 21.0 | Donington Park | 12 October | Jaime Alguersuari | Jaime Alguersuari | Jaime Alguersuari | Carlin Motorsport |
| 22.0 | Donington Park | 12 October | Oliver Oakes | Brendon Hartley | Jaime Alguersuari | Carlin Motorsport |
Question:
Which Round has the Winning Driver of brendon hartley, and a Date of 27 april?
Answer:
4.0