CREATE TABLE table_55780 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine" CLOB, "Tyres" CLOB, "Driver" CLOB, "Rounds" CLOB)

Nigel Mansell was the driver in what Entrant?
SELECT "Entrant" FROM table_55780 WHERE "Driver" = 'nigel mansell'
SELECT "Entrant" FROM "table_55780" WHERE "Driver" = 'nigel mansell'