favorite_language ={

     "jen":"python",

     "sarah":"c",

     "edward":"ruby",

     "phil":"python",

     }

 for name in sorted(favorite_language.keys()):# sort by zimushunxu

     print(name.title()+",thank you for taking the poll.")

 print("\n")

 for name in favorite_language.keys():

     print(name.title()+",thank you for taking the poll.")

 print("\n")

 print("The folllowing languages have been mentioned:")

 for language in favorite_language.values():

     print(language.title())

 print("\nthe following languages have been mentioned:")

 for language in set(favorite_language.values()):

     print(language.title())