Question: To the north, the Sahara skirts the Mediterranean Sea in Egypt and portions of Libya, but in Cyrenaica and the Maghreb, the Sahara borders the Mediterranean forest, woodland, and scrub ecoregions of northern Africa, all of which have a Mediterranean climate characterized by hot summers and cool and rainy winters. According to the botanical criteria of Frank White and geographer Robert Capot-Rey, the northern limit of the Sahara corresponds to the northern limit of date palm cultivation and the southern limit of the range of esparto, a grass typical of the Mediterranean climate portion of the Maghreb and Iberia. The northern limit also corresponds to the 100 mm (3.9 in) isohyet of annual precipitation.
Is there an answer to this question: What ocean is North of the Sahara?

Answer: unanswerable


Question: Falling prices also resulted in homes worth less than the mortgage loan, providing a financial incentive to enter foreclosure. The ongoing foreclosure epidemic that began in late 2006 in the U.S. continues to drain wealth from consumers and erodes the financial strength of banking institutions. Defaults and losses on other loan types also increased significantly as the crisis expanded from the housing market to other parts of the economy. Total losses are estimated in the trillions of U.S. dollars globally.
Is there an answer to this question: What is the financial incentive when a home is worth less than the mortgage loan?

Answer: foreclosure


Question: For decades, the U.S. federal government strenuously tried to force Puerto Ricans to adopt English, to the extent of making them use English as the primary language of instruction in their high schools. It was completely unsuccessful, and retreated from that policy in 1948. Puerto Rico was able to maintain its Spanish language, culture, and identity because the relatively small, densely populated island was already home to nearly a million people at the time of the U.S. takeover, all of those spoke Spanish, and the territory was never hit with a massive influx of millions of English speakers like the vast territory acquired from Mexico 50 years earlier.
Is there an answer to this question: Was French  in Peurto Rico successful?

Answer: unanswerable


Question: The Constitution of Canada gives the federal government exclusive responsibility for national defence, and expenditures are thus outlined in the federal budget. For the 2008–2009 fiscal year, the amount allocated for defence spending was CAD$18.9 billion. This regular funding was augmented in 2005 with an additional CAD$12.5 billion over five years, as well as a commitment to increasing regular force troop levels by 5,000 persons, and the primary reserve by 3,000 over the same period. In 2006, a further CAD$5.3 billion over five years was provided to allow for 13,000 more regular force members, and 10,000 more primary reserve personnel, as well as CAD$17.1 billion for the purchase of new trucks for the Canadian Army, transport aircraft and helicopters for the Royal Canadian Air Force, and joint support ships for the Royal Canadian Navy.
Is there an answer to this question: What year was an additional 12.5 Billion Canadian Dollars assigned for over 10 years?

Answer:
unanswerable