CREATE TABLE "senate_composition_before_the_elections" (
  "d_48" text,
  "d_47" text,
  "d_46" text,
  "d_45" text,
  "d_44" text,
  "d_43" text,
  "d_42" text,
  "d_41" text
);

Question: What is the D45 associated with a D42 of r 22?
SQL: SELECT "d_45" FROM "senate_composition_before_the_elections" WHERE "d_42"='r 22';

Question: What is the D43 associated with a D41 of r 21?
SQL: SELECT "d_43" FROM "senate_composition_before_the_elections" WHERE "d_41"='r 21';

Question: What is the D42 associated with a D47 of d 27?
SQL: SELECT "d_42" FROM "senate_composition_before_the_elections" WHERE "d_47"='d 27';

Question: What is the D43 associated with a D41 of r 16?
SQL: SELECT "d_43" FROM "senate_composition_before_the_elections" WHERE "d_41"='r 16';