CREATE TABLE table_name_20 (city VARCHAR2, host VARCHAR2, region VARCHAR2, state VARCHAR2)

What city in the east region in North Carolina was the round where the University of Richmond was the host?
SELECT city FROM table_name_20 WHERE region = "east" AND state = "north carolina" AND host = "university of richmond"
SELECT "city" FROM "table_name_20" WHERE "east" = "region" AND "host" = "university of richmond" AND "north carolina" = "state"