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:
| Outcome | Date | Tournament | Surface | Opponent in the final | Score in the final |
| --- | --- | --- | --- | --- | --- |
| Runner-up | 29 April 2012 | BRD Năstase Ţiriac Trophy , Bucharest, Romania | Clay | Gilles Simon | 4–6, 3–6 |
| Runner-up | 23 September 2012 | St. Petersburg Open , St. Petersburg, Russia | Hard (i) | Martin Kližan | 2–6, 3–6 |
| Winner | 14 July 2013 | Stuttgart Open , Stuttgart, Germany | Clay | Philipp Kohlschreiber | 5–7, 6–4, 6–4 |
| Winner | 21 July 2013 | International German Open , Hamburg, Germany | Clay | Federico Delbonis | 4–6, 7–6 (10–8) , 6–2 |
| Runner-up | 28 July 2013 | ATP Vegeta Croatia Open Umag , Umag, Croatia | Clay | Tommy Robredo | 0–6, 3–6 |
Question:
Which date has an Outcome of runner-up, and an Opponent in the final of gilles simon?
Answer:
29 April 2012