{"paper":{"title":"Brane-$f(R)$ gravity and dark matter","arxiv_id":"1202.4825","primary_cat":"gr-qc","submitted_at":"2012-02-22T06:07:30+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. 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