Task: Text Matching
Input (English): Sentence1: Most effective. Muscle relaxants for chronic. L4-l5 pain? 
 Sentence2: I have been on muscle relaxant medications for my chronic lower back ache due to L4-L5 disc bulge for quite a while. It helped a lot but there hasn't been much relief lately. Should I consider other options such as physiotherapy, surgery? 
Output (English): Dissimilar