user: Question: Name the date for qíngyuán … yìmǎ
Columns: ['Date (CE)', 'Text', 'Simplified characters', 'Traditional characters', 'Pinyin', 'Wade-Giles', 'Literal meaning']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['c. 406', 'Weimojiesuoshuojing', '心如猿猴', '心如猨猴', 'xīn rú yuánhóu', 'hsin ju yuan-hou', '"mind like a monkey"']
SQL:

assistant: SELECT "Date (CE)" FROM "Table" WHERE "Pinyin" = 'qíngyuán … yìmǎ';