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Fryderyk's father, Nicolas Chopin, was a Frenchman from Lorraine who had emigrated to Poland in 1787 at the age of sixteen. Nicolas tutored children of the Polish aristocracy, and in 1806 married Justyna Krzyżanowska, a poor relative of the Skarbeks, one of the families for whom he worked. Fryderyk was baptized on Easter Sunday, 23 April 1810, in the same church where his parents had married, in Brochów. His eighteen-year-old godfather, for whom he was named, was Fryderyk Skarbek, a pupil of Nicolas Chopin. Fryderyk was the couple's second child and only son; he had an elder sister, Ludwika (1807–55), and two younger sisters, Izabela (1811–81) and Emilia (1812–27). Nicolas was devoted to his adopted homeland, and insisted on the use of the Polish language in the household.

On what date was Frédéric baptised?
Answer: 23 April 1810
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The Baltic was[when?] a forgotten theatre of the Crimean War. Popularisation of events elsewhere overshadowed the significance of this theatre, which was close to Saint Petersburg, the Russian capital. In April 1854 an Anglo-French fleet entered the Baltic to attack the Russian naval base of Kronstadt and the Russian fleet stationed there. In August 1854 the combined British and French fleet returned to Kronstadt for another attempt. The outnumbered Russian Baltic Fleet confined its movements to the areas around its fortifications. At the same time, the British and French commanders Sir Charles Napier and Alexandre Ferdinand Parseval-Deschenes—although they led the largest fleet assembled since the Napoleonic Wars—considered the Sveaborg fortress too well-defended to engage. Thus, shelling of the Russian batteries was limited to two attempts in the summers of 1854 and 1855, and initially, the attacking fleets limited their actions to blockading Russian trade in the Gulf of Finland. Naval attacks on other ports, such as the ones in the island of Hogland in the Gulf of Finland, proved more successful. Additionally, allies conducted raids on less fortified sections of the Finnish coast. These battles are known in Finland as the Åland war.

What is the Russian capital?
Answer: Saint Petersburg
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Passive air defence is defined by NATO as "Passive measures taken for the physical defence and protection of personnel, essential installations and equipment in order to minimize the effectiveness of air and/or missile attack". It remains a vital activity by ground forces and includes camouflage and concealment to avoid detection by reconnaissance and attacking aircraft. Measures such as camouflaging important buildings were common in the Second World War. During the Cold War the runways and taxiways of some airfields were painted green.

Some airfield runways were painted green during what war?
Answer:
the Cold War