question: USATODAY.com - Experts say countries from Brazil to Russia to China are shunning Bill Gates' proprietary Windows operating system in favor of open source systems such as Linux, mounting a major challenge to Microsoft's global dominance.
Q: Which is the best summary of this article?
I think the answer is
answer: Science/Tech

question: Texas Rangers pitcher Frank Francisco allegedly hurled a chair at some fans heckling the Ranger bullpen after the Rangers hit a ninth inning game tying homer in Oakland.
Q: Which is the best summary of this article?
I think the answer is
answer: Sports

question:  ATHENS (Reuters) - Michael Phelps, one more Olympic title  to the good, aims to hoist his gold medal tally to five when he  takes on fellow American Ian Crocker in the 100 meters  butterfly final on Friday.
Q: Which is the best summary of this article?
I think the answer is
answer:
Sports