Question: What is the general classification of stage 3
SQL: SELECT "General classification" FROM "2-12247789-2" WHERE "Stage" = '3';

Question: How many points did Lech Piasecki, Stephen Roche, and Carrera Jeans-Vagabond have?
SQL: SELECT "Points classification" FROM "2-12247789-2" WHERE "Young rider classification" = 'Lech Piasecki' AND "General classification" = 'Stephen Roche' AND "Winner" = 'Carrera Jeans-Vagabond';