1820
" Now that Vivendi Universal has begun a formal process in reviewing options for its entertainment assets , it is appropriate to step aside from any direct management responsibility . "
 Vivendi Universal, its
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 Vivendi Universal, its