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_72 (start_source VARCHAR, ended VARCHAR)
### Question:
What was the start source that ended on 4 May?
### Answer:
SELECT start_source FROM table_name_72 WHERE ended = "4 may"