Problem: Ministry of Defence (United Kingdom):

The Ministers and Chiefs of the Defence Staff are supported by a number of civilian, scientific and professional military advisors. The Permanent Under-Secretary of State for Defence (generally known as the Permanent Secretary) is the senior civil servant at the MoD. His or her role is to ensure the MoD operates effectively as a department of the government.

What is another name for the Minister of the Defense?
---
A: unanswerable


Problem: Melbourne (/ˈmɛlbərn/, AU i/ˈmɛlbən/) is the capital and most populous city in the Australian state of Victoria, and the second most populous city in Australia and Oceania. The name "Melbourne" refers to the area of urban agglomeration (as well as a census statistical division) spanning 9,900 km2 (3,800 sq mi) which comprises the broader metropolitan area, as well as being the common name for its city centre. The metropolis is located on the large natural bay of Port Phillip and expands into the hinterlands towards the Dandenong and Macedon mountain ranges, Mornington Peninsula and Yarra Valley. Melbourne consists of 31 municipalities. It has a population of 4,347,955 as of 2013, and its inhabitants are called Melburnians.
What is the population of Melbourne?
---
Answer: 4,347,955 as of 2013


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Amateur football is governed by Football Canada. At the university level, 26 teams play in four conferences under the auspices of Canadian Interuniversity Sport; the CIS champion is awarded the Vanier Cup. Junior football is played by many after high school before joining the university ranks. There are 20 junior teams in three divisions in the Canadian Junior Football League competing for the Canadian Bowl. The Quebec Junior Football League includes teams from Ontario and Quebec who battle for the Manson Cup.
Which division goes to the CIS champion?
A: unanswerable


Context and question: Jehovah's Witnesses believe that God's kingdom is a literal government in heaven, ruled by Jesus Christ and 144,000 "spirit-anointed" Christians drawn from the earth, which they associate with Jesus' reference to a "new covenant". The kingdom is viewed as the means by which God will accomplish his original purpose for the earth, transforming it into a paradise without sickness or death. It is said to have been the focal point of Jesus' ministry on earth. They believe the kingdom was established in heaven in 1914, and that Jehovah's Witnesses serve as representatives of the kingdom on earth.
How many Jehovah's Witnesses were there in 1914?
Answer: unanswerable


Question: 50 Hz systems support three scanning rates: 50i, 25p and 50p. 60 Hz systems support a much wider set of frame rates: 59.94i, 60i, 23.976p, 24p, 29.97p, 30p, 59.94p and 60p. In the days of standard definition television, the fractional rates were often rounded up to whole numbers, e.g. 23.976p was often called 24p, or 59.94i was often called 60i. 60 Hz high definition television supports both fractional and slightly different integer rates, therefore strict usage of notation is required to avoid ambiguity. Nevertheless, 29.97i/59.94i is almost universally called 60i, likewise 23.976p is called 24p.
Is there an answer to this question: Strict notation is required with HD fractional rates to avoid what?

Answer: ambiguity


Problem: Antenna (radio):

However loss resistance will generally affect the feedpoint impedance, adding to its resistive (real) component. That resistance will consist of the sum of the radiation resistance Rr and the loss resistance Rloss. If an rms current I is delivered to the terminals of an antenna, then a power of I2Rr will be radiated and a power of I2Rloss will be lost as heat. Therefore, the efficiency of an antenna is equal to Rr / (Rr + Rloss). Of course only the total resistance Rr + Rloss can be directly measured.

What is the single factor that can be precisely measured?
---
A:
total resistance