Joined Cases C-108/14 and C-109/14: Judgment of the Court (Second Chamber) of 16 July 2015 (request for a preliminary ruling from the Bundesfinanzhof — Germany) — Beteiligungsgesellschaft Larentia + Minerva mbH & Co. KG v Finanzamt Nordenham (C-108/14), Finanzamt Hamburg-Mitte v Marenave Schiffahrts AG (C-109/14) (Reference for a preliminary ruling — VAT — Sixth Council Directive 77/388/EEC — Article 17 — Right to deduction — Partial deduction — VAT paid by holding companies for the acquisition of capital invested in their subsidiaries — Services supplied to subsidiaries — Subsidiaries constituted in the form of partnerships — Article 4 — Establishment of a group of persons capable of being regarded as a single taxable person — Conditions — Need for a relationship of subordination — Direct effect)