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_1305623_20 (silver_medals VARCHAR, ensemble VARCHAR)
  ### Question:
  How many numbers were listed under Silver Medals for Portsmouth HS?
  ### Answer:
  SELECT COUNT(silver_medals) FROM table_1305623_20 WHERE ensemble = "Portsmouth HS"