10535
The modern ( ε , δ ) - definition of limit and continuous functions was first developed by Bolzano in 1817 , but remained relatively unknown .
 person: Bolzano
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Bolzano