Task: Pos Tagging
Input (English): Sentence: An early September 2003 Newsweek article included a rumor by a Taliban source that at a meeting in April 2003 Bin Laden was planning an " unbelievable " biological attack , the plans for which had suffered a setback upon the arrest of Khalid Shaikh Mohammed ( " KSM " ) {{ . }} 
Word: .
Output (English): PUNCT