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_298550_1 (area__km²_ INTEGER, capital VARCHAR)
  ### Question:
  What is the highest value of area when capital is San Juan?
  ### Answer:
  SELECT MAX(area__km²_) FROM table_298550_1 WHERE capital = "San Juan"