Table: vuelta_1998
Columns: stage
date
course
distance
winner
gc_leader

Question: What distance did giovanni lombardi win after stage 5?
SQL: SELECT "distance" FROM vuelta_1998 WHERE "stage" > 5 AND "winner" = 'giovanni lombardi'

Question: Who is the GC leader at ávila - segovia?
SQL: SELECT "gc_leader" FROM vuelta_1998 WHERE "course" = 'ávila - segovia'