557
there is also intelligence , officials say , suggesting republican guard units have been issued artillery shells containing chemical agents .
 organization: republican guard; person: officials; person: republican guard units; weapon: artillery; weapon: artillery shells containing chemical agents; weapon: chemical agents
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 organization: republican guard; person: officials; person: republican guard units; weapon: artillery; weapon: artillery shells containing chemical agents; weapon: chemical agents