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Shorter, black-and-white daily strips began to appear early in the 20th century, and became established in newspapers after the success in 1907 of Bud Fisher's Mutt and Jeff. Humour strips predominated at first, and in the 1920s and 1930s strips with continuing stories in genres such as adventure and drama also became popular. Thin periodicals called comic books appeared in the 1930s, at first reprinting newspaper comic strips; by the end of the decade, original content began to dominate. The success in 1938 of Action Comics and its lead hero Superman marked the beginning of the Golden Age of Comic Books, in which the superhero genre was prominent.
When did Mutt and Jeff appear?
A: 1907

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On the whole, Eisenhower's support of the nation's fledgling space program was officially modest until the Soviet launch of Sputnik in 1957, gaining the Cold War enemy enormous prestige around the world. He then launched a national campaign that funded not just space exploration but a major strengthening of science and higher education. His Open Skies Policy attempted to legitimize illegal Lockheed U-2 flyovers and Project Genetrix while paving the way for spy satellite technology to orbit over sovereign territory, created NASA as a civilian space agency, signed a landmark science education law, and fostered improved relations with American scientists.
What was the name of the civilian space agency created by Eisenhower?
A: NASA

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The most familiar, and historically the oldest, types of glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand. The term glass, in popular usage, is often used to refer only to this type of material, which is familiar from use as window glass and in glass bottles. Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of approximately 75% silicon dioxide (SiO2), sodium oxide (Na2O) from sodium carbonate (Na2CO3), calcium oxide, also called lime (CaO), and several minor additives. A very clear and durable quartz glass can be made from pure silica, but the high melting point and very narrow glass transition of quartz make glassblowing and hot working difficult. In glasses like soda lime, the compounds added to quartz are used to lower the melting temperature and improve workability, at a cost in the toughness, thermal stability, and optical transmittance.
What types of glass is the word commonly used to mean?
A: silicate glasses

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In 2011, a Welsh club participated in the Premier League for the first time after Swansea City gained promotion. The first Premier League match to be played outside England was Swansea City's home match at the Liberty Stadium against Wigan Athletic on 20 August 2011. In 201213, Swansea qualified for the Europa League by winning the League Cup. The number of Welsh clubs in the Premier League increased to two for the first time in 201314, as Cardiff City gained promotion, but Cardiff City was relegated after its maiden season.
On which date did Swansea City play its first Premier League game?
A:
20 August 2011