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_66 (future_stem VARCHAR, imperfect_stem VARCHAR)
### Question:
What is the future stem for the word that has an imperfect stem of hartzen?
### Answer:
SELECT future_stem FROM table_name_66 WHERE imperfect_stem = "hartzen"