Question: What position did the Belenenses club occupy in 1960/61?
SQL: SELECT "Position in 1960/1961" FROM "2-17933461-2" WHERE "Clubs" = 'Belenenses';

Question: Which club has played for 27 seasons at this level?
SQL: SELECT "Clubs" FROM "2-17933461-2" WHERE "Seasons at this level" = '27 seasons';