Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_37 (year INTEGER, label VARCHAR, Nr VARCHAR, st VARCHAR)
### Question:
What is the earliest year with a label-Nr of st-43?
### Answer:
SELECT MIN(year) FROM table_name_37 WHERE label - Nr = st - 43