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_13 (year_opened INTEGER, span_feet VARCHAR, span_metres VARCHAR)
### Question:
What is the sum of Year opened when the span feet is more than 1247, and the spam metres is 384?
### Answer:
SELECT SUM(year_opened) FROM table_name_13 WHERE span_feet > 1247 AND span_metres = 384