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:
| Event | Time | Venue | Date | Notes |
| --- | --- | --- | --- | --- |
| 50 m freestyle | 20.91 | São Paulo | December 18, 2009 | WR |
| 100 m freestyle | 46.91 | Rome | July 30, 2009 | WR |
| 50 m freestyle | 21.30 | Beijing | August 16, 2008 | OR |
| 50 m butterfly | 22.76 | Rio de Janeiro | April 26, 2012 | AM |
| 4×50 m freestyle | 1:26.12 | São Paulo | December 19, 2009 | SA |
| 4×100 m freestyle | 3:10.80 | Rome | July 26, 2009 | SA |
| 4×100 m medley | 3:29.16 | Rome | August 2, 2009 | SA |
Question:
Which event was held in Beijing?
Answer:
50 m freestyle