Determine the topic of the question-answer pair. Question: "what countries are in cono sur?"; Answer: "Although geographically this includes Southern and part of Southeast ( Sao Paulo ) of Brazil , in terms of political geography the Southern cone has traditionally comprised Argentina , Chile , Paraguay , and Uruguay ."? Topic:
Ans: Southern Cone

Determine the topic of the question-answer pair. Question: "what are the side effects for lyme disease?"; Answer: "Left untreated, later symptoms may involve the joints, heart, and central nervous system ."? Topic:
Ans: Lyme disease

Determine the topic of the question-answer pair. Question: "what is firewire used for?"; Answer: "The IEEE 1394 interface is a serial bus interface standard for high-speed communications and isochronous real-time data transfer."? Topic:
Ans: IEEE 1394

Determine the topic of the question-answer pair. Question: "what is black hairy tongue disease?"; Answer: "Black hairy tongue (BHT, also termed lingua villosa nigra) refers to a condition of the tongue where the filiform papillae elongate with black or brown discoloration, giving a black and hairy appearance."? Topic:
Ans: Black hairy tongue