1.

Does Article 68 of Regulation (EC) No 883/2004 allow German child benefit to be partly recovered retrospectively on the ground of a priority entitlement in another Member State, even though no family benefit has been or is being assessed or paid for the child in the other Member State, with the result that the amount remaining to the beneficiary under German law effectively falls below the German child benefit?

2.

In the event that the first question is answered in the affirmative:

Does the answer to the question as to the grounds on which benefits are payable by more than one Member State within the meaning of Article 68 of Regulation (EC) No 883/2004, or the bases on which the entitlements to be coordinated arise, depend on the conditions of entitlement under the national rules, or on the circumstances on account of which the persons concerned are subject to the legislation of the relevant Member States in accordance with Articles 11 to 16 of Regulation (EC) No 883/2004?

3.

In the event that the decisive criterion is the circumstances on account of which the persons concerned are subject to the legislation of the relevant Member States in accordance with Articles 11 to 16 of Regulation (EC) No 883/2004:

Is Article 68 in conjunction with Article 1(a) and (b) and Article 11(3)(a) of Regulation (EC) No 883/2004 to be interpreted as meaning that an activity as an employed person or an activity as a self-employed person in another Member State, or an equivalent situation treated as such an activity for the purposes of social insurance legislation, is to be assumed to be present where the social insurance fund in the other Member State certifies that the person concerned is insured ‘as a farmer’ and the competent family benefits institution in that State confirms the existence of an activity as an employed person, even though the person concerned claims that that insurance is dependent only on ownership of the farm, which is registered as agriculturally productive land but is not actually in use?