157814
2003 ) , was a lawsuit filed against Unocal for alleged human rights violations .
 organization: Unocal
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: Unocal 
Answer:
 organization: Unocal