To ask the Scottish Executive how it was possible for Chris Mullin MP, Parliamentary Under Secretary at the Department of the Environment, Transport and the Regions, in a letter of 11 January 2000 to the secretary of Glasgow Prestwick International Airport Consultative Committee, to refer to Sarah Boyack's answer to question S1W-2922, which has not been answered in the Parliament and how many days elapse on average between answers to Parliamentary Questions being finalised and being given by e-mail to the relevant MSP and the Parliament.