text: 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 suppliers (customer_phone VARCHAR, supplier_phone VARCHAR); CREATE TABLE customers (customer_phone VARCHAR, supplier_phone VARCHAR)
  ### Question:
  What are the phone numbers of all customers and suppliers.
  ### Answer:
  SELECT customer_phone FROM customers UNION SELECT supplier_phone FROM suppliers