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In 499 Aryabhata , a great mathematician-astronomer from the classical age of Indian mathematics and Indian astronomy , expressed the area of a triangle as one-half the base times the height in the " Aryabhatiya " ( section 2.6 ) .
 person: Aryabhata
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Aryabhata 
Answer:
 person: Aryabhata