Problem: Antibiotics:

The emergence of resistance of bacteria to antibiotics is a common phenomenon. Emergence of resistance often reflects evolutionary processes that take place during antibiotic therapy. The antibiotic treatment may select for bacterial strains with physiologically or genetically enhanced capacity to survive high doses of antibiotics. Under certain conditions, it may result in preferential growth of resistant bacteria, while growth of susceptible bacteria is inhibited by the drug. For example, antibacterial selection for strains having previously acquired antibacterial-resistance genes was demonstrated in 1943 by the LuriaDelbruck experiment. Antibiotics such as penicillin and erythromycin, which used to have a high efficacy against many bacterial species and strains, have become less effective, due to the increased resistance of many bacterial strains.

Who made the demonstration in 1943?
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A: LuriaDelbruck

Problem: The expansion of mandolin use continued after World War II through the late 1960s, and Japan still maintains a strong classical music tradition using mandolins, with active orchestras and university music programs. New orchestras were founded and new orchestral compositions composed. Japanese mandolin orchestras today may consist of up to 40 or 50 members, and can include woodwind, percussion, and brass sections. Japan also maintains an extensive collection of 20th Century mandolin music from Europe and one of the most complete collections of mandolin magazines from mandolin's golden age, purchased by Morishige Takei.
What country doesn't maintain strong classic music tradition with mandolin?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Airports may also contain premium and VIP services. The premium and VIP services may include express check-in and dedicated check-in counters. These services are usually reserved for First and Business class passengers, premium frequent flyers, and members of the airline's clubs. Premium services may sometimes be open to passengers who are members of a different airline's frequent flyer program. This can sometimes be part of a reciprocal deal, as when multiple airlines are part of the same alliance, or as a ploy to attract premium customers away from rival airlines.
These services are usually reserved for what class of passengers?
A: First and Business class

Context and question: The 1829 Metropolitan Police Act created a modern police force by limiting the purview of the force and its powers, and envisioning it as merely an organ of the judicial system. Their job was apolitical; to maintain the peace and apprehend criminals for the courts to process according to the law. This was very different to the 'Continental model' of the police force that had been developed in France, where the police force worked within the parameters of the absolutist state as an extension of the authority of the monarch and functioned as part of the governing state.
What did the Metropolitan Police Act say police weren't a subset of?
Answer: unanswerable

Question: The basic air defence unit is typically a battery with 2 to 12 guns or missile launchers and fire control elements. These batteries, particularly with guns, usually deploy in a small area, although batteries may be split; this is usual for some missile systems. SHORAD missile batteries often deploy across an area with individual launchers several kilometres apart. When MANPADS is operated by specialists, batteries may have several dozen teams deploying separately in small sections; self-propelled air defence guns may deploy in pairs.
Is there an answer to this question: How many guns or missile launchers are typically in a battery?

Answer: 2 to 12

Problem: The Legend of Zelda: Twilight Princess:

Media requests at the trade show prompted Kondo to consider using orchestral music for the other tracks in the game as well, a notion reinforced by his preference for live instruments. He originally envisioned a full 50-person orchestra for action sequences and a string quartet for more "lyrical moments", though the final product used sequenced music instead. Kondo later cited the lack of interactivity that comes with orchestral music as one of the main reasons for the decision. Both six- and seven-track versions of the game's soundtrack were released on November 19, 2006, as part of a Nintendo Power promotion and bundled with replicas of the Master Sword and the Hylian Shield.

What were replicas of the media requests bundled with?
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A:
unanswerable