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'.
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.
\nSince 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.
Example solution: 4
Example 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" 

Problem: 1. The Vatican City in central Rome ranks as the smallest nation of the world. It measures 0.17 square miles.\n2. Monaco. \n3. San Marino.\nHow did they manage to become countries?\n1. The political freedom of the Vatican is guaranteed and protected by Italy. It concordat between the Holy See and the kingdom of Italy signed in 1929 in the Lateran Palace, Rome, by Cardinal Gasparri for Pius XI and by Benito Mussolini for Victor Emmanuel III.\n2. Monaco came under French protection in 1861. However from 1911, when the first constitution was promulgated, the prince of Monaco was an absolute ruler.\n3. According to tradition, Marino, a Christian stonecutter from Dalmatia, took refuge (4th cent) on Mt. Titano, the chief geographical feature of present-day San Marino. By the mid-5th cent., a community was formed; because of its relatively inaccessible location and its poverty, it has succeeded, with a few brief interruptions, in maintaining its independence. In 1631 its independence was recognized by the papacy.

Solution: 1