<|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|>This engine with a cylinder size of 20 ½” x 26” and a firebox of radial-stay was built when?

SQL Table Create Statement:
CREATE TABLE table_25695027_1 (years_built VARCHAR, cylinder_size VARCHAR, firebox VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT years_built FROM table_25695027_1 WHERE cylinder_size = "20 ½” x 26”" AND firebox = "Radial-stay"</codeend><|end|>