Question: What index was created by the United Nations (UNDP) and reached 2nd place in the LA Ranking?
SQL: SELECT "Index (Year)" FROM "1-19948664-1" WHERE "Author / Editor / Source" = 'United Nations (UNDP)' AND "Ranking L.A. (2)" = '2nd';

Question: How many countries were sampled in the index created by The Economist, published in 2007 and ranked 2nd in the LA Ranking?
SQL: SELECT MAX("Countries sampled") FROM "1-19948664-1" WHERE "Author / Editor / Source" = 'The Economist' AND "Year of publication" = '2007' AND "Ranking L.A. (2)" = '2nd';

Question: What's the wold ranking of the index by Transparency International?
SQL: SELECT "World Ranking (1)" FROM "1-19948664-1" WHERE "Author / Editor / Source" = 'Transparency International';

Question: How many countries were sampled for the index in 2nd place in the LA ranking and 23rd in the world ranking?
SQL: SELECT "Countries sampled" FROM "1-19948664-1" WHERE "Ranking L.A. (2)" = '2nd' AND "World Ranking (1)" = '23rd';

Question: How many countries were sampled for the Prosperity Index (2008)?
SQL: SELECT MAX("Countries sampled") FROM "1-19948664-1" WHERE "Index (Year)" = 'Prosperity Index (2008)';