Task: Question Answering
Input (English): The current state-of-the-art approach BIBREF14 , BIBREF15 uses maximum entropy and CRF models with a combination of language model and hand-crafted features to predict if each character in the hashtag is the beginning of a new word. 
 Question: What current state of the art method was used for comparison?
Output (English): current state-of-the-art approach BIBREF14 , BIBREF15