Question: Assistive listening devices in many theaters and similar spaces use arrays of infrared LEDs to send sound to listeners' receivers. Light-emitting diodes (as well as semiconductor lasers) are used to send data over many types of fiber optic cable, from digital audio over TOSLINK cables to the very high bandwidth fiber links that form the Internet backbone. For some time, computers were commonly equipped with IrDA interfaces, which allowed them to send and receive data to nearby machines via infrared.
Is there an answer to this question: What type of fiber doesn't form the backbone of the internet?

Answer: unanswerable

Question: Despite reports of arms entering the country prior to the election and some "disturbances during campaigning," including attacks on government offices by unidentified gunmen, foreign election monitors described the 2005 election overall as "calm and organized".
Is there an answer to this question: What type of "disturbances" were reported during the campaign?

Answer: attacks on government offices

Question: Armenia is also a member of the Council of Europe, maintaining friendly relations with the European Union, especially with its member states such as France and Greece. A 2005 survey reported that 64% of Armenia's population would be in favor of joining the EU. Several Armenian officials have also expressed the desire for their country to eventually become an EU member state, some[who?] predicting that it will make an official bid for membership in a few years.[citation needed] In 2004 its forces joined KFOR, a NATO-led international force in Kosovo. It is also an observer member of the Eurasian Economic Community and the Non-Aligned Movement.
Is there an answer to this question: When can the EU expect Armenia to attempt to join it?

Answer: in a few years

Question: The organ was built by Harrison & Harrison in 1937, then with four manuals and 84 speaking stops, and was used for the first time at the coronation of King George VI. Some pipework from the previous Hill organ of 1848 was revoiced and incorporated in the new scheme. The two organ cases, designed in the late 19th century by John Loughborough Pearson, were re-instated and coloured in 1959.
Is there an answer to this question: When was the organ destroyed?

Answer:
unanswerable