TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: Yes

PROBLEM: passage: The card security code is typically the last three or four digits printed, not embossed like the card number, on the signature strip on the back of the card. On American Express cards, the card security code is the four digits printed (not embossed) on the front towards the right. The card security code is not encoded on the magnetic stripe but is printed flat.
question: does american express card have a security code?

SOLUTION: Yes

PROBLEM: passage: In patchwork, foundation piecing was originally a method used to stabilize pieces of fabric that were stitched together. It first became popular in the 18th and 19th centuries in England, although a 15th-century Italian piece, the Impruneta cushion owned by Antonio degli Agli, may have used foundation piecing. A similar process popular in Britain is English paper piecing.
question: is foundation piecing the same as paper piecing?

SOLUTION:
No