Complex sentence: In 1956 the company became "Il Teatro San Ferdinando s.r.l" and the theatre was improved to hold 1150 seats, but debts forced him to dissolve the Scarpettiana in 1960 and to close the San Fernando in 1961.
Split into simpler sentences: In 1956 the company became "Il Teatro San Ferdinando s.r.l" and the theatre was improved to hold 1150 seats. Debts, however, forced De Filippo to dissolve the Scarpettiana in 1960 and to close the San Fernando in 1961.