On a standard HO-3, the personal property of the insured is insured against:

解析

The special form splits its basis: the dwelling and other structures are open perils, while personal property is covered only for the list of named perils the form spells out. The choice that gives contents the same open-perils treatment as the dwelling describes the comprehensive HO-5 instead. Cutting contents down to fire, lightning and smoke describes a far narrower basic form.