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This list of metro systems includes electrified rapid transit train systems worldwide. In some cases, metro systems are referred to as subways, U-Bahns or undergrounds. As of October 2014, 157 cities in 55 countries around the world host the approximately 160 metro systems that are listed here. The London Underground first opened as an "underground railway" in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system. The metro system with the longest route length is the Shanghai Metro; the busiest one is the Beijing Subway; and the one with the most stations is the New York City Subway.

Answer this question: when was first metro train started in world?

Stream of random thoughts: This is the relevant information: The London Underground first opened as an "underground railway" in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system.... The answer is 1890.
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Dilation (or dilatation) and curettage (D&C) refers to the dilation (widening / opening) of the cervix and surgical removal of part of the lining of the uterus and / or contents of the uterus by scraping and scooping (curettage). It is a therapeutic gynecological procedure as well as the most often used method of first trimester miscarriage or abortion.

Answer this question: what does d&c stand for in medical terms?

Stream of random thoughts: This is the relevant information: Dilation (or dilatation) and curettage (D&C) refers to the dilation (widening / opening) of the cervix and surgical removal of part of the lining of the uterus and / or contents of the uterus by scraping and scooping (curettage).... The answer is Dilation ( or dilatation ) and curettage ( D&C ).
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Context: "Dancing in the Dark" is a popular American song, with music by Arthur Schwartz and lyrics by Howard Dietz, that was first introduced by John Barker in the 1931 revue The Band Wagon. The song was first recorded by Bing Crosby on August 19, 1931 with Studio Orchestra directed by Victor Young, staying on the pop charts for six weeks, peaking at # 3, and helping to make it a lasting standard. The 1941 recording by Artie Shaw and His Orchestra earned Shaw one of his eight gold records at the height of the Big Band era of the 1930s and 1940s.

Question: who wrote the song dancing in the dark?

Stream of random thoughts: The relevant sentence in the passage is: "Dancing in the Dark" is a popular American song, with music by Arthur Schwartz and lyrics by Howard Dietz, that was first introduced by John Barker in the 1931 revue The Band Wagon.... The answer is music by Arthur Schwartz and lyrics by Howard Dietz.
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The "Theme from The Dukes of Hazzard (Good Ol' Boys)" is a song written and recorded by American country music singer Waylon Jennings. It was released in August 1980 as the second single from the album Music Man. Recognizable to fans as the theme to the CBS comedy adventure television series The Dukes of Hazzard, the song became a # 1 hit on the Billboard magazine Hot Country Singles chart in 1980.

Based on this passage, who sang the theme song of dukes of hazzard?


Stream of random thoughts: The relevant sentence in the passage is: The "Theme from The Dukes of Hazzard (Good Ol' Boys)" is a song written and recorded by American country music singer Waylon Jennings.... The answer is Waylon Jennings.
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