Here is a question about this article: Street parking in urban neighborhoods is mostly controlled by the franeleros a.k.a. "viene vienes" (lit. "come on, come on"), who ask drivers for a fee to park, in theory to guard the car, but with the implicit threat that the franelero will damage the car if the fee is not paid. Double parking is common (with franeleros moving the cars as required), impeding on the available lanes for traffic to pass. In order to mitigate that and other problems and to raise revenue, 721 parking meters (as of October 2013), have been installed in the west-central neighborhoods Lomas de Chapultepec, Condesa, Roma, Polanco and Anzures, in operation from 8 AM to 8 PM on weekdays and charging a rate of 2 pesos per 15 minutes, with offenders' cars booted, costing about 500 pesos to remove. 30 percent of the monthly 16 million-peso (as of October 2013) income from the parking-meter system (named "ecoParq") is earmarked for neighborhood improvements. The granting of the license for all zones exclusively to a new company without experience in operating parking meters, Operadora de Estacionamientos Bicentenario, has generated controversy.
What is the answer to this question: How many parking meters were installed as of October 2013?
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So... 721

Here is a question about this article: Josip Broz was born on 7 May 1892 in Kumrovec, in the northern Croatian region of Hrvatsko Zagorje in Austria-Hungary.[nb 1] He was the seventh child of Franjo and Marija Broz. His father, Franjo Broz (26 November 1860 16 December 1936), was a Croat, while his mother Marija (25 March 1864 14 January 1918), was a Slovene. His parents were married on 21 January 1891. After spending part of his childhood years with his maternal grandfather Martin Javersek in the Slovenian village of Podsreda, he entered primary school in 1900 at Kumrovec, he failed the 2nd grade and graduated in 1905. In 1907 he moved out of the rural environment and started working as a machinist's apprentice in Sisak. There, he became aware of the labour movement and celebrated 1 May Labour Day for the first time. In 1910, he joined the union of metallurgy workers and at the same time the Social-Democratic Party of Croatia and Slavonia. Between 1911 and 1913, Broz worked for shorter periods in Kamnik (19111912, factory "Titan"), Cenkov, Munich and Mannheim, where he worked for the Benz car factory; then he went to Wiener Neustadt, Austria, and worked as a test driver for Daimler.
What is the answer to this question: What grade did he fail?
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So... 2nd

Here is a question about this article: Railways must operate at variable speeds. Until the mid 1980s this was only practical with the brush-type DC motor, although such DC can be supplied from an AC catenary via on-board electric power conversion. Since such conversion was not well developed in the late 19th century and early 20th century, most early electrified railways used DC and many still do, particularly rapid transit (subways) and trams. Speed was controlled by connecting the traction motors in various series-parallel combinations, by varying the traction motors' fields, and by inserting and removing starting resistances to limit motor current.
What is the answer to this question: What is speed limit for railways?
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So...
variable speeds