Question: Which stage number did son bou arrive at?
SQL: SELECT COUNT("Stage") FROM "2-16519531-1" WHERE "Arrival" = 'son bou';

Question: How long does the one that stars with Son Bou of Middle difficulty, and on a stage number larger than 13 last?
SQL: SELECT "Duration" FROM "2-16519531-1" WHERE "Stage" > 13.0 AND "Difficulty" = 'Middle' AND "Start" = 'Son Bou';

Question: What is the lowest stage number that starts with Els Alocs and has a Middle difficulty?
SQL: SELECT MIN("Stage") FROM "2-16519531-1" WHERE "Difficulty" = 'Middle' AND "Start" = 'Els Alocs';