The problem: Answer a question about this article:
Hops contain several characteristics that brewers desire in beer. Hops contribute a bitterness that balances the sweetness of the malt; the bitterness of beers is measured on the International Bitterness Units scale. Hops contribute floral, citrus, and herbal aromas and flavours to beer. Hops have an antibiotic effect that favours the activity of brewer's yeast over less desirable microorganisms and aids in "head retention", the length of time that a foamy head created by carbonation will last. The acidity of hops is a preservative.
What do you call the length of time that foam is on top of beer because of carbonation?
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The answer: head retention


Problem: Please answer a question about the following article about Egypt:
Modern Egypt is considered to be a regional and middle power, with significant cultural, political, and military influence in North Africa, the Middle East and the Muslim world. Its economy is one of the largest and most diversified in the Middle East, with sectors such as tourism, agriculture, industry and services at almost equal production levels. In 2011, longtime President Hosni Mubarak stepped down amid mass protests. Later elections saw the rise of the Muslim Brotherhood, which was ousted by the army a year later amid mass protests.
What leader stepped down in 2011?
A: President Hosni Mubarak


Question: Read this and answer the question

While the original Xbox sold poorly in Japan, selling just 2 million units while it was on the market (between 2002 and 2005),[citation needed] the Xbox 360 sold even more poorly, selling only 1.5 million units from 2005 to 2011. Edge magazine reported in August 2011 that initially lackluster and subsequently falling sales in Japan, where Microsoft had been unable to make serious inroads into the dominance of domestic rivals Sony and Nintendo, had led to retailers scaling down and in some cases discontinuing sales of the Xbox 360 completely.

Between 2005 and 2011, how many 360 consoles were sold in Japan?
Answer: 1.5 million units


Problem: Participation in the Premier League by some Scottish or Irish clubs has sometimes been discussed, but without result. The idea came closest to reality in 1998, when Wimbledon received Premier League approval to relocate to Dublin, Ireland, but the move was blocked by the Football Association of Ireland. Additionally, the media occasionally discusses the idea that Scotland's two biggest teams, Celtic and Rangers, should or will take part in the Premier League, but nothing has come of these discussions.
In which year did a Premier League team consider relocating to Ireland?
The answer is the following: 1998


Roman calendars show roughly forty annual religious festivals. Some lasted several days, others a single day or less: sacred days (dies fasti) outnumbered "non-sacred" days (dies nefasti). A comparison of surviving Roman religious calendars suggests that official festivals were organized according to broad seasonal groups that allowed for different local traditions. Some of the most ancient and popular festivals incorporated ludi ("games," such as chariot races and theatrical performances), with examples including those held at Palestrina in honour of Fortuna Primigenia during Compitalia, and the Ludi Romani in honour of Liber. Other festivals may have required only the presence and rites of their priests and acolytes, or particular groups, such as women at the Bona Dea rites.
What traditions did the seasonal festivals incorporate?
local


Here is a question about this article: Many types of sports equipment are made of wood, or were constructed of wood in the past. For example, cricket bats are typically made of white willow. The baseball bats which are legal for use in Major League Baseball are frequently made of ash wood or hickory, and in recent years have been constructed from maple even though that wood is somewhat more fragile. NBA courts have been traditionally made out of parquetry.
What is the answer to this question: What wood has recently started being used to make baseball bats in addition to hickory and ash?
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So...
maple