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_25054 ( "African rank" real, "World rank" real, "Nation" text, "GDP per capita" text, "Total GDP world rank" real )

### Question ###
How many items were listed under world rank under the nation of Nigeria?

### Accurate SQL ###

SELECT COUNT("World rank") FROM table_25054 WHERE "Nation" = 'Nigeria'