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_19534677_1 (material_collected VARCHAR, volume_title VARCHAR)
  ### Question:
  Name the total number of material collected for  justice league of america by george pérez, vol. 2
  ### Answer:
  SELECT COUNT(material_collected) FROM table_19534677_1 WHERE volume_title = "Justice League of America by George Pérez, Vol. 2"