Question: Who was the General Classification awardee if Sergio Luis Henao was the winner and the Points Classification award was given to Sergio Luis Henao?
Schema: create table table_28853064_15 (general_classification varchar, winner varchar, points_classification varchar, PRIMARY KEY (general_classification))
SQL: select general_classification from table_28853064_15 where winner = "sergio luis henao" and points_classification = "sergio luis henao"