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_19948664_1 (countries_sampled INTEGER, ranking_la__2_ VARCHAR, author___editor___source VARCHAR, year_of_publication VARCHAR)
  ### Question:
  How many countries were sampled in the index created by The Economist, published in 2007 and ranked 2nd in the LA Ranking?
  ### Answer:
  SELECT MAX(countries_sampled) FROM table_19948664_1 WHERE author___editor___source = "The Economist" AND year_of_publication = "2007" AND ranking_la__2_ = "2nd"