Summers are becoming hotter than they used to be and global warming is the reason for such unwanted changes. Every living being including humans and animals feel very thirsty during summer. One day you happened to come across a farm and coincidentally you were feeling very thirsty at that moment. You went inside the farm hoping to get some water to drink. You did get enough water to quench your thirst but as you were about to leave you noticed a cow who seemed to be very thirsty. It was tied with a rope which was too tight to be opened. The only way to release the cow is by cutting the rope. Find a way to cut it.