CREATE TABLE table_58691 ("Stage" CLOB, "Winner" CLOB, "General classification" CLOB, "Mountains classification" CLOB, "Points classification" CLOB, "Team Classification" CLOB)

What winner has pierre rolland as mountains classification, with 7 as the stage?
SELECT "Winner" FROM table_58691 WHERE "Mountains classification" = 'pierre rolland' AND "Stage" = '7'
SELECT "Winner" FROM "table_58691" WHERE "Mountains classification" = 'pierre rolland' AND "Stage" = '7'