CREATE TABLE table_55778 ("Entrant" TEXT, "Constructor" TEXT, "Chassis" TEXT, "Engine" TEXT, "Tyres" TEXT, "Driver" TEXT, "Rounds" TEXT)

What was the engine belonging to Pierluigi Martini with a Tyre of P?
SELECT "Engine" FROM table_55778 WHERE "Tyres" = 'p' AND "Driver" = 'pierluigi martini'
SELECT "Engine" FROM "table_55778" WHERE "Driver" = 'pierluigi martini' AND "Tyres" = 'p'