<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>What is the sum of Year opened when the span feet is more than 1247, and the spam metres is 384?

SQL Table Create Statement:
CREATE TABLE table_name_13 (year_opened INTEGER, span_feet VARCHAR, span_metres VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT SUM(year_opened) FROM table_name_13 WHERE span_feet > 1247 AND span_metres = 384</codeend><|end|>