Treaties — Interpretation — Treaty of Versailles — Date on which Terms Used are to be Applied — Date of Signature or Date of Entry into Force — Obligation of Germany between Signature and Entry into Force — Meaning of “Public Utility Undertaking” and “Concession” in Article 260 of the Treaty of Versailles — Shares in a “Holding Company,” whether “Interests” in the Undertaking Owned by the Company the Shares in which are Held.