Task: Text Categorization
Input (English): Text:  Valdis Zatlers (born 22 March 1955) is a Latvian politician and former physician who served as the seventh president of Latvia from 2007 to 2011. He won the Latvian presidential election of 31 May 2007. He became President of Latvia on 8 July 2007 and left office on 7 July 2011 after failing to win reelection for a second term.
Output (English): 5