Complex sentence: The Queen, acting upon the advice of her government, refused to grant her consent for the introduction of the bill, so second reading was postponed from 16 April to 23 July 1999.
Split into simpler sentences: The Queen, acting upon the advice of her government, refused to grant her consent for the introduction of the bill. As a result, the second reading was postponed from 16 April until 23 July 1999.