6740
But opponents , led by the CWA , say new laws are needed because monitoring is heavily concentrated in service industries and 81 % of monitored workers are n't represented by unions .
 organization: CWA; percent: 81 %
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
 Entities: CWA, 81 % 
Answer:
 organization: CWA; percent: 81 %