Task: Text Matching
Input (English): Sentence1: Sharp, localised pain on top of head, about 10 degrees from the centre, in a slight indentation of my parietal bone. Recurrent for a few days. Cause? 
 Sentence2: I have sharp pain on the top of head over the region of indentation on my parietal bone. Can you tell me what could be the cause?
Output (English): Similar