56The Court may refuse to rule on a question referred for a preliminary ruling by a national court only where it is quite obvious that the interpretation of EU law that is sought is unrelated to the actual facts of the main action or its purpose, where the problem is hypothetical, or where the Court does not have before it the factual or legal material necessary to give a useful answer to the questions submitted to it (see, in particular, 22 September 2016, Microsoft Mobile Sales International and Others, C‑110/15, EU:C:2016:717, paragraph 19 and the case-law cited).
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