This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

[EX Q]: The complete technical disclosure of the Columbia LP by Peter C. Goldmark, Rene' Snepvangers and William S. Bachman in 1949 made it possible for a great variety of record companies to get into the business of making long playing records. The business grew quickly and interest spread in high fidelity sound and the do-it-yourself market for pickups, turntables, amplifier kits, loudspeaker enclosure plans, and AM/FM radio tuners. The LP record for longer works, 45 rpm for pop music, and FM radio became high fidelity program sources in demand. Radio listeners heard recordings broadcast and this in turn generated more record sales. The industry flourished.
[EX A]: When was the business booming for do it yourself sound fanatics?

[EX Q]: The Crimean campaign opened in September 1854. 360 ships sailed in seven columns, each steamer towing two sailing ships.:422 Anchoring on 13 September in the bay of Eupatoria, the town surrendered and 500 Marines landed to occupy it. This town and bay would provide a fall back position in case of disaster.:201 The ships then sailed east to make the landing of the allied expeditionary force on the sandy beaches of Calamita Bay on the south west coast of the Crimean Peninsula. The landing surprised the Russians, as they had been expecting a landing at Katcha; the last minute change proving that Russia had known the original battle plan. There was no sign of the enemy and the men were all landed on 14 September. It took another four days to land all the stores, equipment, horses and artillery.
[EX A]: In what year did the Crimean campaign open?

[EX Q]: Decoding, on the other hand, is carefully defined in the standard. Most decoders are "bitstream compliant", which means that the decompressed output that they produce from a given MP3 file will be the same, within a specified degree of rounding tolerance, as the output specified mathematically in the ISO/IEC high standard document (ISO/IEC 11172-3). Therefore, comparison of decoders is usually based on how computationally efficient they are (i.e., how much memory or CPU time they use in the decoding process).
[EX A]:
What is carefully defined in the standard?