Detailed Instructions: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Problem:original question: Which guidebook covers [Aydn]
answer: travel to turkey
answer type: Guidebook.
auxiliary information: Aydn is a city in and the seat of Aydn Province in Turkey's Aegean Region. The city is located at the heart of the lower valley of Buyuk Menderes River at a commanding position for the region extending from the uplands of the valley down to the seacoast. Its population was 207554 in 2014. Aydn city is located along a region which was famous for its fertility and productivity since ancient times. Figs remain the province's best-known crop, although other agricultural products are also grown intensively and the city has some light industry. At the crossroads of a busy transport network of several types, a six-lane motorway connects Aydn to Izmir, Turkey's second port, in less than an hour, and in still less time to the international Adnan Menderes Airport, located along the road between the two cities. A smaller airport, namely Aydn Airport, is located a few kilometers in the South-East of Aydn. The region of Aydn also pioneered the introduction of railways into Turkey in the 19th century and still has the densest railroad network. The province of Aydn is also where a number of internationally known historic sites and centers of tourism are concentrated.
Solution:
What book that guides covers [Aydn]?