SCHEMA:
CREATE TABLE table_name_47 (type VARCHAR, surname VARCHAR, rank VARCHAR, number_of_bearers_2008 VARCHAR)
USER:
What is Type, when Rank is greater than 6, when Number of Bearers 2008 is greater than 13.815, and when Surname is Eriksen?

QUERY:
SELECT type FROM table_name_47 WHERE rank > 6 AND number_of_bearers_2008 > 13.815 AND surname = "eriksen"