The testator left the residue of his estate to an Alberta corporation which was a wholly-owned subsidiary of another Alberta corporation. The Alberta parent's shares were owned by the testators 12 grandchildren resident in Nova Scotia. S.2(5) of the Succession Duties Act (Nova Scotia) provided that where a non-resident corporation by reason of the death of a deceased acquired or became "beneficially entitled" to property of the deceased each of the shareholders of the corporation was deemed to be a successor of property of the deceased.