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 table_29778616_1 (manufacturer VARCHAR, intro_date VARCHAR, throughput VARCHAR)
  ### Question:
  Who is the manufacturer whose intro date is 2006 and their throughput is 4 mbit/s?
  ### Answer:
  SELECT manufacturer FROM table_29778616_1 WHERE intro_date = "2006" AND throughput = "4 Mbit/s"