Where the insured or the annuitant and the beneficiary in a policy of life or accident insurance or in an annuity contract have died and there is no sufficient evidence to establish that they have died other than simultaneously, the proceeds of the policy or contract shall be distributed as if the insured or annuitant had survived the beneficiary, except if the policy or contract is community property of the insured or annuitant and his spouse, and there is no alternative beneficiary, or no alternative beneficiary except the estate or personal representatives of the insured, the proceeds shall be distributed as community property under Section 4.¹