input question: Determine the topic of the question-answer pair. Question: "what is the @ sign called??"; Answer: "The at sign @ is also commonly called the at symbol, ampersat, apetail or commercial at in Englishand less commonly a wide range of other terms."? Topic:???
output answer: At sign

input question: Determine the topic of the question-answer pair. Question: "where did the persian war take place?"; Answer: "The actions of the general Pausanias at the siege of Byzantium alienated many of the Greek states from the Spartans, and the anti-Persian alliance was therefore reconstituted around Athenian leadership, as the so-called Delian League ."? Topic:???
output answer: Greco-Persian Wars

input question: Determine the topic of the question-answer pair. Question: "what is in the alpine mountain systems?"; Answer: "At present the region is home to 14 million people and has 120 million annual visitors."? Topic:???
output answer: Alps

input question: Determine the topic of the question-answer pair. Question: "what school district is alvin in??"; Answer: "Alvin Independent School District is a school district based in Alvin , Texas ( USA )."? Topic:???
output answer:
Alvin Independent School District