Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_20 (city VARCHAR, host VARCHAR, region VARCHAR, state VARCHAR)

### Question ###
What city in the east region in North Carolina was the round where the University of Richmond was the host?

### Accurate SQL ###

SELECT city FROM table_name_20 WHERE region = "east" AND state = "north carolina" AND host = "university of richmond"