237946
The attack was orchestrated via a botnet established by Walker , using servers he exploited and rented , the majority of which were located in Malaysia .
 person: Walker; location: Malaysia
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: Walker, Malaysia 
Answer:
 person: Walker; location: Malaysia