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_225095_4 (reason_for_change VARCHAR, successor VARCHAR)
### Question:
How many reasons for change were listed when Edward Hempstead was the successor?
### Answer:
SELECT COUNT(reason_for_change) FROM table_225095_4 WHERE successor = "Edward Hempstead"