Question: Which Venue has a Notes of 2:28:31?
SQL: SELECT "Venue" FROM "2-15671631-1" WHERE "Notes" = '2:28:31';

Question: Which Venue has a Competition of Venice Marathon?
SQL: SELECT "Venue" FROM "2-15671631-1" WHERE "Competition" = 'Venice Marathon';

Question: Which Year that has Notes of DNF?
SQL: SELECT MIN("Year") FROM "2-15671631-1" WHERE "Notes" = 'DNF';

Question: Which Competition has a Year larger than 2000?
SQL: SELECT "Competition" FROM "2-15671631-1" WHERE "Year" > 2000.0;