§ 1205. Contents of petition. The petition shall briefly describe the fund or property with respect to which the proceeding is brought, and the nature of the action or proceeding which gave rise to the fund or property. It may include one or more items, as the attorney-general may be advised, without prejudice to his right subsequently to commence proceedings relating to other items not included. It shall also set forth the facts from which the court may find, or from which a presumption may arise, that (a) the rightful owner or owners of the fund or property are unknown; or (b) that they have died without having disposed thereof, and without having left a will, disposing thereof and without having left any heirs, next-of-kin or distributees; or (c) that such property has been abandoned.