CREATE TABLE "current_members" (
  "institution" text,
  "location" text,
  "founded" real,
  "type" text,
  "enrollment" real,
  "nickname" text,
  "joined" text
);

Question: What is every year for joined with the Ravens nickname?
SQL: SELECT "joined" FROM "current_members" WHERE "nickname"='Ravens';

Question: What is every institution with a nickname of Ravens?
SQL: SELECT "institution" FROM "current_members" WHERE "nickname"='Ravens';