This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[Q]: Passage: Desktop computers and laptops are commonly infected with malware either to gather passwords or financial account information, or to construct a botnet to attack another target. Smart phones, tablet computers, smart watches, and other mobile devices such as Quantified Self devices like activity trackers have also become targets and many of these have sensors such as cameras, microphones, GPS receivers, compasses, and accelerometers which could be exploited, and may collect personal information, including sensitive health information. Wifi, Bluetooth, and cell phone network on any of these devices could be used as attack vectors, and sensors might be remotely activated after a successful breach. Question: Activity trackers are an example of what?
[A]: Quantified Self devices

[Q]: Passage: Feynman attended Far Rockaway High School, a school in Far Rockaway, Queens also attended by fellow Nobel laureates Burton Richter and Baruch Samuel Blumberg. Upon starting high school, Feynman was quickly promoted into a higher math class. An unspecified school-administered IQ test estimated his IQ at 123high, but "merely respectable" according to biographer James Gleick. When he turned 15, he taught himself trigonometry, advanced algebra, infinite series, analytic geometry, and both differential and integral calculus. In high school he was developing the mathematical intuition behind his Taylor series of mathematical operators. Before entering college, he was experimenting with and deriving mathematical topics such as the half-derivative using his own notation. Question: What high school did Feynman go to?
[A]: Far Rockaway High School

[Q]: Passage: In 2006, Beyonce introduced her all-female tour band Suga Mama (also the name of a song in B'Day) which includes bassists, drummers, guitarists, horn players, keyboardists and percussionists. Her background singers, The Mamas, consist of Montina Cooper-Donnell, Crystal Collins and Tiffany Monique Riddick. They made their debut appearance at the 2006 BET Awards and re-appeared in the music videos for "Irreplaceable" and "Green Light". The band have supported Beyonce in most subsequent live performances, including her 2007 concert tour The Beyonce Experience, 20092010 I Am... World Tour and 20132014 The Mrs. Carter Show World Tour. Question: What are Beyonce's backup singers called?
[A]:
The Mamas