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 Location | Mens Singles | Womens Singles | Mens Doubles | Womens Doubles |
| --- | --- | --- | --- | --- |
| 2011 Sheffield | Chen Qi | Ding Ning | Xu Xin Zhang Jike | Guo Yue Guo Yan |
| 2009 Sheffield | Ma Long | Guo Yan | Ma Long Wang Liqin | Kim Kyung-Ah Park Mi-Young |
| 2001 Chatham | Wang Liqin | Yoshie Takada | Timo Boll Zoltan Fejer-Konnerth | Kim Hyang-Mi Kim Hyon-Hui |
| 1999 Hopton-on-Sea | Ma Wenge | Jie Schöpp | Danny Heister Trinko Keen | Lee Eun-Sil Ryu Ji-Hae |
| 1997 Kettering | Jean-Michel Saive | Chen-Tong Fei-Ming | Patrick Chila Christophe Legout | Chai Po Wa Qiao Yunping |
Question:
When and where did Chen Qi win in men singles?
Answer:
2011 Sheffield