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_name_97 (capacity VARCHAR, rank VARCHAR, city VARCHAR)
### Question:
What is the capacity of the stadium with a rank lower than 31 located in the city of Belém ?
### Answer:
SELECT capacity FROM table_name_97 WHERE rank < 31 AND city = "belém"