38. The system of claim 37 , wherein the at least one processor is further programmed to modify the at least one information item with a valid date combination or delete the at least one information item with an invalid date combination.
37. The system of claim 31 , wherein the external knowledge source includes a calendar with date information and wherein the at least one processor is further programmed to, during the analyzing of the plurality of interpretations, compare at least one information item in the plurality of information items for each of the plurality of interpretations with the calendar to detect if any invalid date combinations are present in the at least one information item.