Table: pailheres_stage
Columns: year
stage
category
start
finish
leader_at_the_summit

Question: Who was the leader at the summit for the race in 2005?
SQL: SELECT "leader_at_the_summit" FROM pailheres_stage WHERE "year" = 2005

Question: What is the sum of the stages for category 1 races after the year 2003?
SQL: SELECT SUM("stage") FROM pailheres_stage WHERE "category" = '1' AND "year" > 2003