user: Question: What's the quantity preserved when the fleet number was 700?
Columns: ['Class', 'Wheel arrangement', 'Fleet number(s)', 'Manufacturer', 'Year made', 'Quantity made', 'Quantity preserved']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific', '4-6-2 — ooOOOo — Pacific']
SQL:

assistant: SELECT "Quantity preserved" FROM "Table" WHERE "Fleet number(s)" = '700';