Problem: Uranium:

In nature, uranium is found as uranium-238 (99.2742%) and uranium-235 (0.7204%). Isotope separation concentrates (enriches) the fissionable uranium-235 for nuclear weapons and most nuclear power plants, except for gas cooled reactors and pressurised heavy water reactors. Most neutrons released by a fissioning atom of uranium-235 must impact other uranium-235 atoms to sustain the nuclear chain reaction. The concentration and amount of uranium-235 needed to achieve this is called a 'critical mass'.

What is the most prevalent natural isotope of uranium?
---
A: uranium-238

Problem: Alsace:

"Alsatia", the Latin form of Alsace's name, has long ago entered the English language with the specialized meaning of "a lawless place" or "a place under no jurisdiction" - since Alsace was conceived by English people to be such. It was used into the 20th century as a term for a ramshackle marketplace, "protected by ancient custom and the independence of their patrons". As of 2007, the word is still in use among the English and Australian judiciaries with the meaning of a place where the law cannot reach: "In setting up the Serious Organised Crime Agency, the state has set out to create an Alsatia - a region of executive action free of judicial oversight," Lord Justice Sedley in UMBS v SOCA 2007.

What was the meaning or term used for Aslace that was used by english people in the 20th century?
---
A: ramshackle marketplace

Problem: United States dollar:

The United States Mint produces Proof Sets specifically for collectors and speculators. Silver Proofs tend to be the standard designs but with the dime, quarter, and half dollar containing 90% silver. Starting in 1983 and ending in 1997, the Mint also produced proof sets containing the year's commemorative coins alongside the regular coins. Another type of proof set is the Presidential Dollar Proof Set where four special $1 coins are minted each year featuring a president. Because of budget constraints and increasing stockpiles of these relatively unpopular coins, the production of new Presidential dollar coins for circulation was suspended on December 13, 2011, by U.S. Treasury Secretary Timothy F. Geithner. Future minting of such coins will be made solely for collectors.

Other than the Silver Budget set, what other type of Budget set exists?
---
A: unanswerable

Problem: Westminster Abbey:

The first reports of the abbey are based on a late tradition claiming that a young fisherman called Aldrich on the River Thames saw a vision of Saint Peter near the site. This seems to be quoted to justify the gifts of salmon from Thames fishermen that the abbey received in later years. In the present era, the Fishmonger's Company still gives a salmon every year. The proven origins are that in the 960s or early 970s, Saint Dunstan, assisted by King Edgar, installed a community of Benedictine monks here.

Who, till this day still gives the Abbey a bun?
---
A:
unanswerable