Table:
text: 2010–11 Colchester United F.C. season
Player Info
Player Info
No_ Name_ Place_of_Birth Date_of_Birth Previous_Club Date_Joined Fee Contract_Expiry
1 Ben Williams Manchester 27 August 1982 Carlisle United 10 July 2009 £60,000 May 2012
2 Conor Powell Dublin 26 August 1987 Bohemians 6 January 2011 Free May 2011 *
3 Lee Beevers Doncaster 4 December 1983 Lincoln City 29 June 2009 Free May 2011 *
4 Magnus Okuonghae Croydon 16 February 1986 Dagenham & Redbridge 1 July 2009 £65,000 May 2012
5 Pat Baldwin London 12 November 1982 Chelsea 31 August 2002 Free May 2012
7 Ashley Vincent Birmingham 26 May 1985 Cheltenham Town 1 July 2009 Free May 2012

Question: For the 2010/11 season of Colchester United FC, what was the previous club for the Ben Williams name?

Question: How many dates of birth are there if previous club Chelsea is under 2010–11 Colchester United FC?

Question: What is the date of birth of Colchester United FC No 1 for 2010/11 season? 7 ?