Question: Who's the leader in the young rider classification in stage 12?
SQL: SELECT "Young rider classification" FROM "1-12261714-2" WHERE "Stage" = '12';

Question: Who's leading in the general classification in stage 1a?
SQL: SELECT "General classification" FROM "1-12261714-2" WHERE "Stage" = '1a';

Question: How many leaders are there in the intergiro classification in stage 20?
SQL: SELECT COUNT("Intergiro classification") FROM "1-12261714-2" WHERE "Stage" = '20';

Question: What's the leader team in the Trofeo Fast Team in stage 20?
SQL: SELECT "Trofeo Fast Team" FROM "1-12261714-2" WHERE "Stage" = '20';

Question: Who's the winner in stage 1a, where the leader in the young rider classification is Francesco Casagrande?
SQL: SELECT "Winner" FROM "1-12261714-2" WHERE "Young rider classification" = 'Francesco Casagrande' AND "Stage" = '1a';

Question: Who's the leader in the general classification in stage 1a?
SQL: SELECT "General classification" FROM "1-12261714-2" WHERE "Stage" = '1a';