Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Q: The Surface Book 2 is a 2 - in - 1 PC designed and produced by Microsoft , part of the company 's Surface line of personal computing . It was unveiled on October 17 , 2017 and released on November 16 , 2017 . Starting on November 9 , one week prior to the release date , consumers were able to place a pre-order through Microsoft 's website . It succeeds the Surface Book released in October 2015 .

A: Surface Book 2
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Q: The Tang dynasty or the Tang Empire ( Chinese : 唐 朝 ) was an imperial dynasty of China preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period . It is generally regarded as a high point in Chinese civilization , and a golden age of cosmopolitan culture . Its territory , acquired through the military campaigns of its early rulers , rivaled that of the Han dynasty , and the Tang capital at Chang'an ( present - day Xi'an ) was the most populous city in the world .

A: Tang dynasty
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Q: Betalains are a class of red and yellow indole - derived pigments found in plants of the Caryophyllales , where they replace anthocyanin pigments . Betalains also occur in some higher order fungi . They are most often noticeable in the petals of flowers , but may color the fruits , leaves , stems , and roots of plants that contain them . They include pigments such as those found in beets .

A:
Betalain
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