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:
| Parliament | Name | Period in office | Birth and death years | General election contested | Constituency contested | Political party |
| --- | --- | --- | --- | --- | --- | --- |
| 7th | Lee Siew-Choh | 16 December1989– 31 August 1991 | 1917–2002 | 1988.0 | Eunos GRC | Workers' Party |
| 7th | Francis Seow Tiang Siew | 16–17 December 1988 | 1928– | 1988.0 | Eunos GRC | Workers' Party |
| 9th | J.B. Jeyaretnam | 14 January1997– 23 July 2001 | 1926–2008 | 1997.0 | Cheng San GRC | Workers' Party |
| 10th | Steve Chia Kiah Hong | November2001– 20 April 2006 | 1970– | 2001.0 | Choa Chu Kang SMC | Singapore Democratic Alliance |
| 11th | Sylvia Lim Swee Lian | 12 May2006– 9 April 2011 | 1965– | 2006.0 | Aljunied GRC | Workers' Party |
| 12th | Lina Loh Woon Lee | 16 May 2011– | 1949– | 2011.0 | Potong Pasir SMC | Singapore People's Party |
| 12th | Yee Jenn Jong | 16 May 2011– | 1965– | 2011.0 | Joo Chiat SMC | Workers' Party |
| 12th | Gerald Giam Yean Song | 16 May 2011– | 1976– | 2011.0 | East Coast GRC | Workers' Party |
Question:
During what period were parliament 11th?
Answer:
12 May2006– 9 April 2011