Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_2248991_2 (world_rank VARCHAR, nation VARCHAR)
### Question:
How many items were listed under world rank under the nation of Nigeria?
### Answer:
SELECT COUNT(world_rank) FROM table_2248991_2 WHERE nation = "Nigeria"