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_143352_1 (construction_started VARCHAR, agr_power_station VARCHAR)
  ### Question:
  What year did construction start at Heysham 1
  ### Answer:
  SELECT construction_started FROM table_143352_1 WHERE agr_power_station = "Heysham 1"