Task: Text Matching
Input (English): Sentence1: I have external small hard darkish lump on my sternum, dead centre, 1 inch above nipple level. Not painful. Should I be concerned? 
 Sentence2: I tend to develop what I think are keloids and these are usually hard scar like tissue on the sternum. They dont seem to hurt but I have itching. What can I do about it?
Output (English): Dissimilar