CREATE TABLE table_22713796_14 (stage NUMBER, winner VARCHAR2, general_classification VARCHAR2, team_classification VARCHAR2)

Name the most stage for alejandro valverde and astana greg henderson
SELECT MAX(stage) FROM table_22713796_14 WHERE general_classification = "Alejandro Valverde" AND team_classification = "Astana" AND winner = "Greg Henderson"
SELECT MAX("stage") FROM "table_22713796_14" WHERE "Alejandro Valverde" = "general_classification" AND "Astana" = "team_classification" AND "Greg Henderson" = "winner"