The task is reading a paragraph containing numbers as digits. The digits can be used to represent Quantity, Dates and Time, Addresses or Positions. Convert the digits into their text equivalents. If a number has a prefix, postfix or punctuation preserve it in the text equivalent. 100000 is translated as hundred thousand, Roman numerals are also translated. If multiple numbers are present convert all instances.

Approximately 15 minutes before the shooting of Tippit, Oswald was seen leaving his roominghouse.
Approximately fifteen minutes before the shooting of Tippit, Oswald was seen leaving his roominghouse.

Oswald was asked during the New Orleans radio debate in which he engaged on August 21, 1963,
Oswald was asked during the New Orleans radio debate in which he engaged on August twenty one, nineteen sixty three,

testified that after driving to Parkland Hospital, he returned to the Depository Building about 20 minutes after the shooting,

testified that after driving to Parkland Hospital, he returned to the Depository Building about twenty minutes after the shooting,