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_51947 ( "Rank ( WJC )" real, "Rank (ARDA)" real, "Metro area" text, "Number of Jews (WJC)" real, "Number of Jews (ASARB)" real )

### Question ###
What was the number of WJC Jews with a WJC rank of 6?

### Accurate SQL ###

SELECT "Number of Jews (WJC)" FROM table_51947 WHERE "Rank ( WJC )" = '6'