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_1886270_1 ( built VARCHAR, hr_name VARCHAR )

### Question ###
When river ness is the hr name how many builts are there?

### Accurate SQL ###

SELECT COUNT(built) FROM table_1886270_1 WHERE hr_name = "River Ness"