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'.

[EX Q]: infinity

and for those people..

infinity + 1, infinity x infinity
and infinity ^ infinity
[EX A]: 1

[EX Q]: The hot air weighs less then unheated air. The Air molecules move around faster. With the lighter air, the lanterns float up.. Causeing the garbage to float into someone elses yard
[EX A]: 0

[EX Q]: here is an article that I've found:"Long before there was ever an established guide dog program was developed, dogs have been aiding the blind. A wooden plaque from the Middle Ages portrays a dog leading a blind man with a leash. The first actual attempt to train dogs to aid the blind was made in 1780 at Les Quinze-Vingts hospital for the blind, in Paris. In 1788, Josef Riesinger of Vienna was able to train a dog so well that people often doubted that he was blind!..."
[EX A]:
3