27110
CDO collateral became dominated not by loans , but by lower level ( BBB or A ) tranches recycled from other asset-backed securities , whose assets were usually non-prime mortgages .
 organization: CDO
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: CDO 
Answer:
 organization: CDO