1804
. @ ryderdavid describes his group 's digital security challenge at #ONACamp https://t.co/TupucyZiUY
 person: ryderdavid
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:
 person: ryderdavid