The task is to read a passage and convert numbers in their text forms into digit forms. The text numbers can be used to represent Quantity, Dates and Time, Addresses or Positions.
--------
Question: The Warren Commission Report. By The President's Commission on the Assassination of President Kennedy. Chapter four. The Assassin: Part seven.

Answer: The Warren Commission Report. By The President's Commission on the Assassination of President Kennedy. Chapter 4. The Assassin: Part 7.

Question: This vehicle, a nineteen fifty five Cadillac eight passenger convertible especially outfitted for the Secret Service,

Answer: This vehicle, a 1955 Cadillac eight passenger convertible especially outfitted for the Secret Service,

Question: It will examine his defection to the Soviet Union in nineteen fifty nine, his subsequent return to the United States and his life here

Answer:
It will examine his defection to the Soviet Union in 1959, his subsequent return to the United States and his life here