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.
Example: Jacob ate three burgers today.
Example solution: Jacob ate 3 burgers today.
Example explanation: The number in text form three is converted into the number in digit form 3.

Problem: who had previously interviewed Oswald, saw him on television and heard a radio debate in which he engaged on August twenty one, nineteen sixty three.

Solution: who had previously interviewed Oswald, saw him on television and heard a radio debate in which he engaged on August 21, 1963.