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The term was introduced by Apollonius of Perga in his work on conic sections , but in contrast to its modern meaning , he used it to mean any line that does not intersect the given curve .
 Apollonius of Perga
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Apollonius of Perga