Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Air Force One landed at Andrews Air Force Base, where President Kennedy had begun his last trip only 31 hours before.
Student:
Air Force One landed at Andrews Air Force Base, where President Kennedy had begun his last trip only thirty one hours before.