18333
Inventions and Business Launches U.S. HomeGuard In 2003 Walker Digital devised an Internet – based surveillance system called U.S. HomeGuard .
 person: Walker Digital
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 Digital 
Answer:
 person: Walker Digital