Task: Text Matching
Input (English): Sentence1: Pain in the right leg that goes and goes, sometimes on the side, sometimes in the groin. Burns behind the knee and gets worse with cold. What can be? 
 Sentence2: I have on & off pain on the side of right leg and sometimes in the groin. I also experience burning sensation behind the knee, that gets worse when I am cold. What could be the cause?
Output (English): Similar