Question: Extract the answer to the question from the following context. Question: What accessories would you use to reduce physical harm to your ipod? Context: Many accessories have been made for the iPod line. A large number are made by third party companies, although many, such as the iPod Hi-Fi, are made by Apple. Some accessories add extra features that other music players have, such as sound recorders, FM radio tuners, wired remote controls, and audio/visual cables for TV connections. Other accessories offer unique features like the Nike+iPod pedometer and the iPod Camera Connector. Other notable accessories include external speakers, wireless remote controls, protective case, screen films, and wireless earphones. Among the first accessory manufacturers were Griffin Technology, Belkin, JBL, Bose, Monster Cable, and SendStation.
Answer: protective case, screen films

[Q]: Extract the answer to the question from the following context. Question: What is name of Madonna's youngest sister? Context: Madonna was born to Catholic parents Silvio Anthony "Tony" Ciccone (b. 1931) and Madonna Louise Fortin (c. 1933 December 1, 1963) in Bay City, Michigan, on August 16, 1958. Her father's parents were immigrants from Pacentro, Italy, while her mother was of French-Canadian ancestry. Tony worked as an engineer designer for Chrysler and General Motors. Since Madonna had the same name as her mother, family members called her "Little Nonni". She has two elder brothers, Anthony (born 1956) and Martin (born 1957), and three younger siblings, Paula (born 1959), Christopher (born 1960), and Melanie (born 1962).
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[A]: Melanie

input: Please answer the following: Extract the answer to the question from the following context. Question: What might Kant believe to be the necessary component of idealism? Context: The 2nd edition (1787) contained a Refutation of Idealism to distinguish his transcendental idealism from Descartes's Sceptical Idealism and Berkeley's anti-realist strain of Subjective Idealism. The section Paralogisms of Pure Reason is an implicit critique of Descartes' idealism. Kant says that it is not possible to infer the 'I' as an object (Descartes' cogito ergo sum) purely from "the spontaneity of thought". Kant focused on ideas drawn from British philosophers such as Locke, Berkeley and Hume but distinguished his transcendental or critical idealism from previous varieties;
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output: the spontaneity of thought

Please answer this: Extract the answer to the question from the following context. Question: What is ridiculed as failing to provide a viable mechanism? Context: Darwin's aims were twofold: to show that species had not been separately created, and to show that natural selection had been the chief agent of change. He knew that his readers were already familiar with the concept of transmutation of species from Vestiges, and his introduction ridicules that work as failing to provide a viable mechanism. Therefore, the first four chapters lay out his case that selection in nature, caused by the struggle for existence, is analogous to the selection of variations under domestication, and that the accumulation of adaptive variations provides a scientifically testable mechanism for evolutionary speciation.
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Answer: Vestiges

Problem: Extract the answer to the question from the following context. Question: Antibodies are disbursed by what? Context: The humoral (antibody) response is defined as the interaction between antibodies and antigens. Antibodies are specific proteins released from a certain class of immune cells known as B lymphocytes, while antigens are defined as anything that elicits the generation of antibodies ("anti"body "gen"erators). Immunology rests on an understanding of the properties of these two biological entities and the cellular response to both.

A: B lymphocytes

input: Please answer the following: Extract the answer to the question from the following context. Question: What is the organometallic precursor for the Barbier reaction? Context: There are many important organozinc compounds. Organozinc chemistry is the science of organozinc compounds describing their physical properties, synthesis and reactions. Among important applications is the Frankland-Duppa Reaction in which an oxalate ester(ROCOCOOR) reacts with an alkyl halide R'X, zinc and hydrochloric acid to the -hydroxycarboxylic esters RR'COHCOOR, the Reformatskii reaction which converts -halo-esters and aldehydes to -hydroxy-esters, the SimmonsSmith reaction in which the carbenoid (iodomethyl)zinc iodide reacts with alkene(or alkyne) and converts them to cyclopropane, the Addition reaction of organozinc compounds to carbonyl compounds. The Barbier reaction (1899) is the zinc equivalent of the magnesium Grignard reaction and is better of the two. In presence of just about any water the formation of the organomagnesium halide will fail, whereas the Barbier reaction can even take place in water. On the downside organozincs are much less nucleophilic than Grignards, are expensive and difficult to handle. Commercially available diorganozinc compounds are dimethylzinc, diethylzinc and diphenylzinc. In one study the active organozinc compound is obtained from much cheaper organobromine precursors:
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output:
organozinc