-- Database schema
| publication : Publication_ID [ INT ] primary_key , Book_ID [ INT ] publication.Book_ID = book.Book_ID , Publisher [ TEXT ] , Publication_Date [ TEXT ] , Price [ INT ] | book : Book_ID [ INT ] primary_key , Title [ TEXT ] , Issues [ INT ] , Writer [ TEXT ] |
-- -- What are the distinct publishers of publications with price higher than 5000000?

SELECT DISTINCT Publisher FROM publication WHERE Price  >  5000000;