In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.

Q: passage: In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial of a single indeterminate x is x − 4x + 7. An example in three variables is x + 2xyz − yz + 1.
 question: does a polynomial have to have a variable?

A: Yes
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Q: passage: Damon Salvatore is a fictional character in The Vampire Diaries novel series. He is portrayed by Ian Somerhalder in the television series. Initially, Damon is the main antagonist in the beginning of the show and later became a protagonist. After the first few episodes, Damon begins working alongside his younger brother, Stefan Salvatore, to resist greater threats and gradually Elena begins to consider him a friend. His transition was completed after his younger brother Stefan, who is also a vampire, convinces him to drink blood. Damon thus vows to make his brother's life sorrowful -- thus further causing a century-long rift between the two brothers, centering around Katherine and eventually a love triangle with Elena Gilbert. After on-again/off-again relationship with both brothers, Elena chooses to be with Damon in the series finale.
 question: do elena and damon date in vampire diaries?

A: Yes
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Q: passage: Ivory Coast (Côte d'Ivoire) is a sub-Saharan nation in southern West Africa located at 8 00°N, 5 00°W. The country is approximately square in shape. Its southern border is a 515 km (320 mi) coastline on the Gulf of Guinea on the north Atlantic Ocean. On the other three sides it borders five other African nations for a total of 3,458 km (2,149 mi): Liberia to the southwest for 778 km (483 mi), Guinea to the northwest for 816 km (507 mi), Mali to the north-northwest for 599 km (372 mi), Burkina Faso to the north-northeast for 545 km (339 mi), and Ghana to the east for 720 km (447 mi).
 question: is the ivory coast north of the equator?

A:
Yes
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