Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Nearly all the gasoline sold in the United States today is mixed with 10 percent ethanol, a mix known as E10, and motor vehicle manufacturers already produce vehicles designed to run on much higher ethanol blends. Ford, DaimlerChrysler, and GM are among the automobile companies that sell flexible-fuel cars, trucks, and minivans that can use gasoline and ethanol blends ranging from pure gasoline up to 85% ethanol (E85). The challenge is to expand the market for biofuels beyond the farm states where they have been most popular to date. The Energy Policy Act of 2005, which calls for 7.5 billion US gallons (28,000,000 m3) of biofuels to be used annually by 2012, will also help to expand the market.
What was the Energy Policy Act of 2004?
A: unanswerable

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Research into LCPS (low cost private schools) found that over 5 years to July 2013, debate around LCPSs to achieving Education for All (EFA) objectives was polarised and finding growing coverage in international policy. The polarisation was due to disputes around whether the schools are affordable for the poor, reach disadvantaged groups, provide quality education, support or undermine equality, and are financially sustainable. The report examined the main challenges encountered by development organisations which support LCPSs. Surveys suggest these types of schools are expanding across Africa and Asia. This success is attributed to excess demand. These surveys found concern for:
Where are these types of school spreading across?
A: Africa and Asia

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Eisenhower responded to the French defeat with the formation of the SEATO (Southeast Asia Treaty Organization) Alliance with the U.K., France, New Zealand and Australia in defense of Vietnam against communism. At that time the French and Chinese reconvened Geneva peace talks; Eisenhower agreed the U.S. would participate only as an observer. After France and the Communists agreed to a partition of Vietnam, Eisenhower rejected the agreement, offering military and economic aid to southern Vietnam. Ambrose argues that Eisenhower, by not participating in the Geneva agreement, had kept the U.S out of Vietnam; nevertheless, with the formation of SEATO, he had in the end put the U.S. back into the conflict.
What was the purpose of SEATO?
A: defense of Vietnam against communism

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There is a close connection between machine learning and compression: a system that predicts the posterior probabilities of a sequence given its entire history can be used for optimal data compression (by using arithmetic coding on the output distribution) while an optimal compressor can be used for prediction (by finding the symbol that compresses best, given the previous history). This equivalence has been used as a justification for using data compression as a benchmark for "general intelligence."
What has a close connection to machine equivalence?
A:
unanswerable