Question:
Which position did Daniel Sirera hold in Aug, 2007?

Context:
 Daniel Sirera holds the position of secretary member of the Catalan Audiovisual Council from Jul, 2012 to Dec, 2022. 
 Daniel Sirera holds the position of Member of the Senate of Spain from Mar, 2008 to Apr, 2008. 
 Daniel Sirera holds the position of member of the Catalan Audiovisual Council from Jul, 2012 to Dec, 2022. 
 Daniel Sirera holds the position of Member of the Catalan Parliament from Nov, 1995 to Oct, 2010. 
 Daniel Sirera holds the position of City councillor of Barcelona from Jan, 1996 to Jan, 1999. 
 Daniel Sirera holds the position of president of the People's Party of Catalonia from Jan, 2007 to Jan, 2008.

Answer:
president of the People's Party of Catalonia