CREATE TABLE table_19948664_1 (world_ranking__1_ VARCHAR2, author___editor___source VARCHAR2)

What's the wold ranking of the index by Transparency International?
SELECT world_ranking__1_ FROM table_19948664_1 WHERE author___editor___source = "Transparency International"
SELECT "world_ranking__1_" FROM "table_19948664_1" WHERE "Transparency International" = "author___editor___source"