Text: System of a Down, sometimes shortened to System and abbreviated as SOAD, is an Armenian-American heavy metal band from Glendale, California, formed in 1994. The band currently consists of Serj Tankian (lead vocals, keyboards), Daron Malakian (vocals, guitar), Shavo Odadjian (bass, backing vocals) and John Dolmayan (drums).

Question: does system of a down have 2 singers?
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Answer: yes

Text: A human mission to Mars has been the subject of science fiction, aerospace engineering, and scientific proposals since the 19th century. The plans comprise proposals to land on Mars, eventually settling on and terraforming the planet, while utilizing its moons, Phobos and Deimos.

Question: has there been any space missions to mars?
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Answer: no

Text: After Toys ''R'' Us announced plans to close all 735 of its U.S. stores in March 2018, Build-A-Bear Workshop remained as the only major toy retailer to survive the retail apocalypse.

Question: did build a bear go out of business?
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Answer: no

Text: Some critics, fans, and general audiences have expressed disappointment that the Harry Potter series did not win any Oscars for its achievements. However, others have pointed out that certain films in the series had uneven reviews, in contrast to the three films of The Lord of the Rings, for example, which were all critically acclaimed. This has been partially attributed to the Harry Potter franchise going through several directors with their own styles in contrast to the Lord of the Rings trilogy, which was filmed in one massive undertaking by the same director, writer, and producer.

Question: did the harry potter movies win any oscars?
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Answer:
no