2513
Finally , he said , in February 1996 , ` ` three registered nurses came forward to report a patient ' s , a health care professional ' s , a hospital ' s worst nightmare : There was a killer amongst them . ' '
 organization: a hospital; person: he; person: three registered nurses; person: a patient; person: a health care professional; person: a killer; person: them
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
 Entities: a hospital, he, three registered nurses, a patient, a health care professional, a killer, them 
Answer:
 organization: a hospital; person: he; person: three registered nurses; person: a patient; person: a health care professional; person: a killer; person: them