The objective of this task is to take a frequency list of words for Hindi which have been categorised and then lemmatise them. This means finding the "base" or "dictionary" form of the word. Further information can be found on the following page: http://wiki.apertium.org/wiki/Task_ideas_for_Google_Code-in/Lemmatise_words_from_frequency_list . You will need to have some knowledge of the language whose words you intend to lemmatise.