12. The computer program product of claim 8 wherein the computer readable program code configured to identify the original language is further configured to: calculate a confidence score based on the given pair vector and the threshold vector distance; and identifying the original language based on the confidence score.
14. The computer program product of claim 12 wherein the computer readable program code configured to calculate a confidence score is further configured to: evaluate metadata of the retrieved document to identify data relevant to the original language; determine the original language of the relevant data; and incorporate the original language of the relevant data into the confidence score.