The problem: Answer a question about this article:
Two inland ports on rivers serve Oklahoma: the Port of Muskogee and the Tulsa Port of Catoosa. The only port handling international cargo in the state, the Tulsa Port of Catoosa is the most inland ocean-going port in the nation and ships over two million tons of cargo each year. Both ports are located on the McClellan-Kerr Arkansas River Navigation System, which connects barge traffic from Tulsa and Muskogee to the Mississippi River via the Verdigris and Arkansas rivers, contributing to one of the busiest waterways in the world.
Where is the furthest-inland oceangoing port in the US?
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The answer: Tulsa


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The state also has five Micropolitan Statistical Areas centered on Bozeman, Butte, Helena, Kalispell and Havre. These communities, excluding Havre, are colloquially known as the "big 7" Montana cities, as they are consistently the seven largest communities in Montana, with a significant population difference when these communities are compared to those that are 8th and lower on the list. According to the 2010 U.S. Census, the population of Montana's seven most populous cities, in rank order, are Billings, Missoula, Great Falls, Bozeman, Butte, Helena and Kalispell. Based on 2013 census numbers, they collectively contain 35 percent of Montana's population. and the counties containing these communities hold 62 percent of the state's population. The geographic center of population of Montana is located in sparsely populated Meagher County, in the town of White Sulphur Springs.
How much of the states population does the "Big 7" have?
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The answer: 35 percent


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The music hall and cabaret are famous Paris institutions. The Moulin Rouge was opened in 1889. It was highly visible because of its large red imitation windmill on its roof, and became the birthplace of the dance known as the French Cancan. It helped make famous the singers Mistinguett and Édith Piaf and the painter Toulouse-Lautrec, who made posters for the venue. In 1911, the dance hall Olympia Paris invented the grand staircase as a settling for its shows, competing with its great rival, the Folies Bergère, Its stars in the 1920s included the American singer and dancer Josephine Baker. The Casino de Paris presented many famous French singers, including Mistinguett, Maurice Chevalier, and Tino Rossi. Other famous Paris music halls include Le Lido, on the Champs-Élysées, opened in 1946; and the Crazy Horse Saloon, featuring strip-tease, dance and magic, opened in 1951. The Olympia Paris has presented Edith Piaf, Marlene Dietrich, Miles Davis, Judy Garland, and the Grateful Dead. A half dozen music halls exist today in Paris, attended mostly visitors to the city. 
In what year was The Moulin Rouge opened?
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The answer: 1889


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Iran received access to the Internet in 1993. According to 2014 census, around 40% of the population of Iran are Internet users. Iran ranks 24th among countries by number of Internet users. According to the statistics provided by the web information company of Alexa, Google Search and Yahoo! are the most used search engines in Iran. Over 80% of the users of Telegram, a cloud-based instant messaging service, are from Iran. Instagram is the most popular online social networking service in Iran. Direct access to Facebook has been blocked in Iran since the 2009 Iranian presidential election protests, due to organization of the opposition movements on the website; but however, Facebook has around 12 to 17 million users in Iran who are using virtual private networks and proxy servers to access the website. Around 90% of Iran's e-commerce takes place on the Iranian online store of Digikala, which has around 750,000 visitors per day and more than 2.3 million subscribers. Digikala is the most visited online store in the Middle East, and ranks 4th among the most visited websites in Iran.
What is Iran's most popular online social network?
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The answer:
Instagram