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_203_247 ( id number, "district" text, "counties represented" text, "delegate" text, "party" text, "first elected" number, "committee" text )

### Question ###
how many delegates are under the ways and means committee and represented washington county ?

### Accurate SQL ###

SELECT COUNT("delegate") FROM table_203_247 WHERE "counties represented" = 'washington' AND "committee" = 'ways and means'