The problem: Answer a question about this article:
Russian distinguishes between consonant phonemes with palatal secondary articulation and those without, the so-called soft and hard sounds. This distinction is found between pairs of almost all consonants and is one of the most distinguishing features of the language. Another important aspect is the reduction of unstressed vowels. Stress, which is unpredictable, is not normally indicated orthographically though an optional acute accent ( , znak udareniya) may be used to mark stress, such as to distinguish between homographic words, for example (zamok, meaning a lock) and (zamok, meaning a castle), or to indicate the proper pronunciation of uncommon words or names.
What kind of words can acute accents distinguish?
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The answer: homographic words

The problem: Answer a question about this article:
The principal battles of the stalemate include the Battle of Bloody Ridge (18 August15 September 1951), the Battle of the Punchbowl (31 August-21 September 1951), the Battle of Heartbreak Ridge (13 September15 October 1951), the Battle of Old Baldy (26 June4 August 1952), the Battle of White Horse (615 October 1952), the Battle of Triangle Hill (14 October25 November 1952), the Battle of Hill Eerie (21 March21 June 1952), the sieges of Outpost Harry (1018 June 1953), the Battle of the Hook (2829 May 1953), the Battle of Pork Chop Hill (23 March16 July 1953), and the Battle of Kumsong (1327 July 1953).
When was the Battle of White Horse?
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The answer: 615 October 1952

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Vaccines rely on immune modulation or augmentation. Vaccination either excites or reinforces the immune competence of a host to ward off infection, leading to the activation of macrophages, the production of antibodies, inflammation, and other classic immune reactions. Antibacterial vaccines have been responsible for a drastic reduction in global bacterial diseases. Vaccines made from attenuated whole cells or lysates have been replaced largely by less reactogenic, cell-free vaccines consisting of purified components, including capsular polysaccharides and their conjugates, to protein carriers, as well as inactivated toxins (toxoids) and proteins.
What type of vaccines have saved millions of lives?
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The answer: Antibacterial vaccines

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Commentaries dealing with the zahir (outward aspects) of the text are called tafsir, and hermeneutic and esoteric commentaries dealing with the batin are called ta'wil ("interpretation" or "explanation"), which involves taking the text back to its beginning. Commentators with an esoteric slant believe that the ultimate meaning of the Quran is known only to God. In contrast, Quranic literalism, followed by Salafis and Zahiris, is the belief that the Quran should only be taken at its apparent meaning.[citation needed]
Who is the only one who ever knows the full meaning of Quranic verses in the esoteric view?
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The answer:
God