Text: When completed in 1859, it was, says clockmaker Ian Westworth, ''the prince of timekeepers: the biggest, most accurate four-faced striking and chiming clock in the world.'' The tower had its 150th anniversary on 31 May 2009, during which celebratory events took place.

Question: does big ben have a clock on all four sides?
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Answer: yes

Text: Rogue One: A Star Wars Story, or simply Rogue One, is a 2016 American epic space opera film directed by Gareth Edwards. The screenplay by Chris Weitz and Tony Gilroy is from a story by John Knoll and Gary Whitta. It was produced by Lucasfilm and distributed by Walt Disney Studios Motion Pictures. It is the first installment of the Star Wars Anthology series, set immediately before the events of the original Star Wars film. The cast includes Felicity Jones, Diego Luna, Riz Ahmed, Ben Mendelsohn, Donnie Yen, Mads Mikkelsen, Alan Tudyk, Jiang Wen and Forest Whitaker. Rogue One follows a group of rebels on a mission to steal the plans for the Death Star, the Galactic Empire's superweapon.

Question: is rogue one an official star wars movie?
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Answer: yes

Text: The Song of Songs, also Song of Solomon or Canticles (Hebrew: , Sir HasSirim, Greek: , asma asmaton, both meaning Song of Songs), is one of the megillot (scrolls) found in the last section of the Tanakh, known as the Ketuvim (or ''Writings''), and a book of the Old Testament.

Question: is the song of songs in the bible?
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Answer: yes

Text: Deletion of outlier data is a controversial practice frowned upon by many scientists and science instructors; while mathematical criteria provide an objective and quantitative method for data rejection, they do not make the practice more scientifically or methodologically sound, especially in small sets or where a normal distribution cannot be assumed. Rejection of outliers is more acceptable in areas of practice where the underlying model of the process being measured and the usual distribution of measurement error are confidently known. An outlier resulting from an instrument reading error may be excluded but it is desirable that the reading is at least verified.

Question: can there be outliers in a normal distribution?
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Answer:
no