TASK DEFINITION: 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.
PROBLEM: Hosty testified that he did not know until the evening of Thursday, November twenty one, that there was to be a motorcade, however,

SOLUTION: Hosty testified that he did not know until the evening of Thursday, November 21, that there was to be a motorcade, however,

PROBLEM: and he estimated that it took him three to four minutes to drive three blocks west from the checkpoint to Field Street,

SOLUTION: and he estimated that it took him 3 to 4 minutes to drive three blocks west from the checkpoint to Field Street,

PROBLEM: and left for Irving with Marina Oswald and June and most of the Oswalds' effects three days later.

SOLUTION:
and left for Irving with Marina Oswald and June and most of the Oswalds' effects 3 days later.