user: Question: What is the date that the item was laid down if it was launched on 1899-04-25?
Columns: ['Kanji', 'Name (Translation)', 'Builder', 'Laid down', 'Launched', 'Completed']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['雷', 'Ikazuchi "Thunder"', 'Yarrow Shipbuilders , Poplar , London', '1897-09-01', '1898-11-15', '1899-02-23']
SQL:

assistant: SELECT "Laid down" FROM "Table" WHERE "Launched" = '1899-04-25';