Question: Which rider from the 1971 Isle of Man Junior TT 250cc final standings had a speed equal to 86.15mph?
SQL: SELECT "Rider" FROM "2-10638654-3" WHERE "Speed" = '86.15mph';

Question: Which rider had a points score equal to 10?
SQL: SELECT "Rider" FROM "2-10638654-3" WHERE "Points" = 10.0;