3543
Founded in 1982 , the party reached its greatest level of success in the 2000 s , when it had over fifty seats in local government , one seat on the London Assembly , and two Members of the European Parliament .
 organization: London Assembly; organization: European Parliament
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:
 organization: London Assembly; organization: European Parliament