10448
Many other algorithms were suggested for different kind of network graphs , such as undirected rings , unidirectional rings , complete graphs , grids , directed Euler graphs , and others .
 person: Euler
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: Euler