Part 1. Definition
You are given a passage. Using the information present in the passage, you need to classify it into one of the 10 topics: 0 - 'Society & Culture', 1 - 'Science & Mathematics', 2 - 'Health', 3 - 'Education & Reference', 4 - 'Computers & Internet', 5 - 'Sports', 6 - 'Business & Finance', 7 - 'Entertainment & Music', 8 - 'Family & Relationships', 9 - 'Politics & Government'.
Part 2. Example
Optical mice use an LED and a camera to rapidly
capture images of the surface beneath the mouse.
The infomation from the camera is analyzed by a
DSP (Digital Signal Processor) and used to detect
imperfections in the underlying surface and
determine motion. Some materials, such as glass,
mirrors or other very shiny, uniform surfaces
interfere with the ability of the DSP to
accurately analyze the surface beneath the mouse.

Since glass is transparent and very uniform, the
mouse is unable to pick up enough imperfections in
the underlying surface to determine motion.
Mirrored surfaces are also a problem, since they
constantly reflect back the same image, causing
the DSP not to recognize motion properly. When the
system is unable to see surface changes associated
with movement, the mouse will not work properly.
Answer: 4
Explanation: The passage talks about optical mice or mouse throughout which is a part of computer system. Thus, it is correctly classified to "Computers & Internet"
Part 3. Exercise
The predatory mammals (which includes us humans) -- flesh-eating hunters such as the cats the dogs, wolves and foxes; the bears; and the weasel family -- have binocular vision: eyes in the front of their heads, with powerful eye muscles that enable them to focus very rapidly and to contract or dilate the pupils according to whether the light is bright or dim. An animal that is preyed upon by many enemies has its eyes out on the sides of its head: each eye with its own field of vision. For example, a cottontail rabbit can see what is above, behind, on either side, and in front of it except what is right before its nose. He probably does not see the clover leaf he eats. Species which are hunted by other animals but which are predators themselves at times, commonly have eyes that are a compromise. A possum's eyes are located at an angle of about 30 degrees with the axis of the body.
Answer:
1