Input: Read this: Plymouth is the regional television centre of BBC South West. A team of journalists are headquartered at Plymouth for the ITV West Country regional station, after a merger with ITV West forced ITV Westcountry to close on 16 February 2009. The main local newspapers serving Plymouth are The Herald and Western Morning News with Radio Plymouth , BBC Radio Devon, Heart South West , and Pirate FM being the main local radio stations.
Question: What regional ITV station serves Plymouth?

Output: ITV West Country

Input: Read this: In tumbling, athletes perform an explosive series of flips and twists down a sprung tumbling track. Scoring is similar to trampolining. Tumbling was originally contested as one of the events in Men's Artistic Gymnastics at the 1932 Summer Olympics, and in 1955 and 1959 at the Pan American Games. From 1974 to 1998 it was included as an event for both genders at the Acrobatic Gymnastics World Championships. The event has also been contested since 1976 at the Trampoline World Championships. Since the recognition of Trampoline and Acrobatic Gymnastics as FIG disciplines in 1999, official Tumbling competitions are only allowed as an event in Trampoline gymnastics meets.
Question: What is involved in trampolining?

Output: unanswerable

Input: Read this: DC commutating electric motors, if fitted with laminated pole pieces, become universal motors because they can also operate on AC; reversing the current in both stator and rotor does not reverse the motor. But the now-standard AC distribution frequencies of 50 and 60 Hz caused difficulties with inductive reactance and eddy current losses. Many railways chose low AC frequencies to overcome these problems. They must be converted from utility power by motor-generators or static inverters at the feeding substations or generated at dedicated traction powerstations.
Question: The now-standard DC frequencies are what?

Output: unanswerable

Input: Read this: Later interpretations of Avicenna's philosophy split into three different schools; those (such as al-Tusi) who continued to apply his philosophy as a system to interpret later political events and scientific advances; those (such as al-Razi) who considered Avicenna's theological works in isolation from his wider philosophical concerns; and those (such as al-Ghazali) who selectively used parts of his philosophy to support their own attempts to gain greater spiritual insights through a variety of mystical means. It was the theological interpretation championed by those such as al-Razi which eventually came to predominate in the madrasahs.
Question: What did al-Tusi believe Avicenna's theological works were isolated from?

Output:
unanswerable