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_21109892_1 (rank VARCHAR, value_world_rank VARCHAR)
### Question:
When the value world rank is 7, what is the rank?
### Answer:
SELECT rank FROM table_21109892_1 WHERE value_world_rank = "7"