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In the past, many organizations have claimed ownership of patents related to MP3 decoding or encoding. These claims led to a number of legal threats and actions from a variety of sources. As a result, uncertainty about which patents must be licensed in order to create MP3 products without committing patent infringement in countries that allow software patents was a common feature of the early stages of adoption of the technology.
What has many organizations claiming ownership of patents related to aspects of MP3 led to?
A: legal threats

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Old English is one of the West Germanic languages, and its closest relatives are Old Frisian and Old Saxon. Like other old Germanic languages, it is very different from Modern English and difficult for Modern English speakers to understand without study. Old English grammar is quite similar to that of modern German: nouns, adjectives, pronouns, and verbs have many inflectional endings and forms, and word order is much freer. The oldest Old English inscriptions were written using a runic system, but from about the 9th century this was replaced by a version of the Latin alphabet.
To what modern language is Old English similar?
A: German

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Japan used the name Greater East Asia War (, Dai To-A Senso?), as chosen by a cabinet decision on 10 December 1941, to refer to both the war with the Western Allies and the ongoing war in China. This name was released to the public on 12 December, with an explanation that it involved Asian nations achieving their independence from the Western powers through armed forces of the Greater East Asia Co-Prosperity Sphere. Japanese officials integrated what they called the JapanChina Incident (, Nisshi Jihen?) into the Greater East Asia War.
By what name was the war with Japan referred?
A: Greater East Asia War

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Unlike those of Mexican states' schools, curricula of Mexico City's public schools is managed by the federal Secretary of Public Education. The whole funding is allocated by the government of Mexico City (in some specific cases, such as El Colegio de Mexico, funding comes from both the city's government and other public and private national and international entities).[citation needed] The city's public high school system is the Instituto de Educacion Media Superior del Distrito Federal (IEMS-DF).
Who is in charge of the education in Mexico City?
A:
Secretary of Public Education