Definition: 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.
Input: original question: Find Spanish comarca whose capital is [Terrassa].
answer: vall√®s occidental
answer type: Spanish comarca.
auxiliary information: Terrassa is a Spanish city in the east central region of Catalonia, in the province of Barcelona, comarca of Vall√®s Occidental, of which it is the cocapital along with Sabadell. The city is located in the Catalan Prelitoral depression, at the feet of the Prelitoral mountain range and the average altitude of the city is 277 meters above sea level. It is 20 and 18 kilometres from Barcelona and Montserrat respectively.

[Terrassa] is the capital of what Spanish comarca?