ABSTRACT
Once Sherlock Holmes and Dr. Watson went camping. They set up their tent under the trees in a campground, had their outdoor meals, and went to sleep. In the middle of the night Sherlock woke up Dr. Watson and said, ”My dear Dr. Watson, tell me what you see.” Dr. Watson opened his eyes and said, ”I see a beautiful night sky through the trees.” ”And, my dear Watson, what does that tell you?” ”It tell me that it is a clear night, and the world is peacefully sleeping.” ”What else does it tell you?” ”I don’t know what else you want me say. Why, what does it tell you, Sherlock?” Sherlock gravely replied, ”Elementary, my dear Watson. It tells me that someone has stolen our tent.”
