3517
Based on the assessment of the state of the world and the activities and objectives of the human operator , the system can , within the bounds of its authority , carry out activities on behalf of the user , make the user aware of events particularly relevant to his activities , and manage the information content of the user ’s displays .
 None
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:
 None