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.

Let me give you an example: The boy placed 13th in class.
The answer to this example can be: The boy placed thirteenth in class.
Here is why: Here the number represents the position of the person, and hence we use the 'th' form of the number.

OK. solve this:
Mrs. Roberts testified that on Thursday, November 21, Oswald did not come home.
Answer:
Mrs. Roberts testified that on Thursday, November twenty one, Oswald did not come home.