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_20 (technology VARCHAR, toxic_materials VARCHAR, moving_parts VARCHAR)
### Question:
What's the technology when there are no moving parts but yes to toxic materials?
### Answer:
SELECT technology FROM table_name_20 WHERE toxic_materials = "yes" AND moving_parts = "no"