Problem: Determine the topic of the question-answer pair. Question: "what is the sign for degrees?"; Answer: "The degree symbol () is a typographical symbol that is used, among other things, to represent degrees of arc (e.g. in geographic coordinate systems ), hours (in the medical field), or degrees of temperature ."? Topic:

A: Degree symbol

Problem: Given the question: Determine the topic of the question-answer pair. Question: "what is el morro in puerto rico?"; Answer: "Castillo San Felipe del Morro also known as Fort San Felipe del Morro or Morro Castle, is a 16th-century citadel located in San Juan, Puerto Rico ."? Topic:
++++++++++++++++++++++++++++++++
The answer is:
Castillo San Felipe del Morro

input question: Determine the topic of the question-answer pair. Question: "what is vitamin a for?"; Answer: "Vitamin A is needed by the retina of the eye in the form of retinal , which combines with protein opsin to form rhodopsin the light-absorbing molecule , that is necessary for both low-light ( scotopic vision) and color vision ."? Topic:???
output answer: Vitamin A

Determine the topic of the question-answer pair. Question: "what are rocker arms??"; Answer: "Generally referred to within the context of the internal combustion engine of automotive, marine, motorcycle and reciprocating aviation engines, the rocker arm is an oscillating lever that conveys radial movement from the cam lobe into linear movement at the poppet valve to open it."? Topic:
----
Answer: Rocker arm

Q: Determine the topic of the question-answer pair. Question: "what are add ons?"; Answer: "Peripheral , an optional computer hardware component that significantly supplements or enhances the functionality of the original unit"? Topic:
A: Add-on

[Q]: Determine the topic of the question-answer pair. Question: "how is rfid tag powered?"; Answer: "Some tags are powered and read at short ranges (a few meters) via magnetic fields ( electromagnetic induction )."? Topic:
****
[A]:
Radio-frequency identification