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.
Q: prior to November twenty one, nineteen sixty three, except on Monday, October twenty one, when he visited his wife in the hospital
A: 
prior to November 21, 1963, except on Monday, October 21, when he visited his wife in the hospital