CREATE TABLE table_26957 ("Name" CLOB, "Position" CLOB, "Period" CLOB, "Appearances\\u00b9" FLOAT, "Goals\\u00b9" FLOAT, "Nationality\\u00b2" CLOB)

Name the period for michel prost
SELECT "Period" FROM table_26957 WHERE "Name" = 'Michel Prost'
SELECT "Period" FROM "table_26957" WHERE "Name" = 'Michel Prost'