Problem: Extract the answer to the question from the following context. Question: what is the last ethnicity mentioned? Context: In 1955 American nuclear arms policy became one aimed primarily at arms control as opposed to disarmament. The failure of negotiations over arms until 1955 was due mainly to the refusal of the Russians to permit any sort of inspections. In talks located in London that year, they expressed a willingness to discuss inspections; the tables were then turned on Eisenhower, when he responded with an unwillingness on the part of the U.S. to permit inspections. In May of that year the Russians agreed to sign a treaty giving independence to Austria, and paved the way for a Geneva summit with the U.S., U.K. and France. At the Geneva Conference Eisenhower presented a proposal called "Open Skies" to facilitate disarmament, which included plans for Russia and the U.S. to provide mutual access to each other's skies for open surveillance of military infrastructure. Russian leader Nikita Khrushchev dismissed the proposal out of hand.

A: Russian

Problem: Extract the answer to the question from the following context. Question: what was the second to last alternative name mentioned? Context: A Spanish expedition was sent from Buenos Aires, organized by the Spanish governor of that city, Bruno Mauricio de Zabala. On 22 January 1724, the Spanish forced the Portuguese to abandon the location and started populating the city, initially with six families moving in from Buenos Aires and soon thereafter by families arriving from the Canary Islands who were called by the locals "guanches", "guanchos" or "canarios". There was also one significant early Italian resident by the name of Jorge Burgues.

A: guanchos

Problem: Extract the answer to the question from the following context. Question: Of the Union of Utrecht and the Act of Abjuration, which came second? Context: In 1579 a number of the northern provinces of the Low Countries signed the Union of Utrecht, in which they promised to support each other in their defence against the Spanish army. This was followed in 1581 by the Act of Abjuration, the declaration of independence of the provinces from Philip II.

A: Act of Abjuration

Problem: Extract the answer to the question from the following context. Question: Why is hydrogen called fault gas? Context: From all the fault gases formed in power transformers, hydrogen is the most common and is generated under most fault conditions; thus, formation of hydrogen is an early indication of serious problems in the transformer's life cycle.

A:
most common and is generated under most fault conditions