Problem: Given the question: Extract the answer to the question from the following context. Question: What is not a proprietary storage device: memory card, AV protocol, or Xbox 360 hard drives? Context: Music, photos and videos can be played from standard USB mass storage devices, Xbox 360 proprietary storage devices (such as memory cards or Xbox 360 hard drives), and servers or computers with Windows Media Center or Windows XP with Service pack 2 or higher within the local-area network in streaming mode. As the Xbox 360 uses a modified version of the UPnP AV protocol, some alternative UPnP servers such as uShare (part of the GeeXboX project) and MythTV can also stream media to the Xbox 360, allowing for similar functionality from non-Windows servers. This is possible with video files up to HD-resolution and with several codecs (MPEG-2, MPEG-4, WMV) and container formats (WMV, MOV, TS).
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The answer is:
AV protocol

Problem: Given the question: Extract the answer to the question from the following context. Question: Which contestant did the worst during the finale? Context: Nick Fradiani won the season, defeating Clark Beckham. By winning, Fradiani became the first winner from the Northeast region. Fradiani released "Beautiful Life" as his coronation single while Beckham released "Champion". Jax, the third place finalist, also released a single called "Forcefield".
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The answer is:
Jax

Problem: Given the question: Extract the answer to the question from the following context. Question: A solution that contains acid are classified as? Context: To avoid the implication of the naked "solvated proton" in solution, acidic aqueous solutions are sometimes considered to contain a less unlikely fictitious species, termed the "hydronium ion" (H3O+). However, even in this case, such solvated hydrogen cations are more realistically conceived as being organized into clusters that form species closer to H9O+4. Other oxonium ions are found when water is in acidic solution with other solvents.
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The answer is:
acidic