CREATE TABLE table_68778 ("Name" TEXT, "Street Address" TEXT, "Years as tallest" TEXT, "Height ft / m" TEXT, "Floors" FLOAT)

What is the address of the Life & Casualty Tower?
SELECT "Street Address" FROM table_68778 WHERE "Name" = 'life & casualty tower'
SELECT "Street Address" FROM "table_68778" WHERE "Name" = 'life & casualty tower'