CREATE TABLE table_18332845_2 (arrival VARCHAR2, calling_at VARCHAR2)

What was the arrival for Wansford, Peterborough East?
SELECT arrival FROM table_18332845_2 WHERE calling_at = "Wansford, Peterborough East"
SELECT "arrival" FROM "table_18332845_2" WHERE "Wansford, Peterborough East" = "calling_at"