A norwegian black metal can be true.Logical formLearned from13 sentences. A (metal music) may pertain-to a male.Logical formLearned from13 sentences. Best (metal performance) can be at some awards.Logical formLearned from13 sentences. A disk can be constituted-of-or-filled-with metal.Logical formLearned from13 sentences. A metal may undergo a reaction.Logical formLearned from13 sentences. Electrons can be in a metal.Logical formLearned from13 sentences. Metals can be heavy.Logical formLearned from13 sentences. Supply may pertain-to a metal.Logical formLearned from13 sentences. A metal can be other.Logical formLearned from13 sentences. Defects can be in metals.Logical formLearned from13 sentences. Metals may be found.Logical formLearned from13 sentences. A (metal backup) can be bare.Logical formLearned from13 sentences. A group can be constituted-of-or-filled-with metals.Logical formLearned from13 sentences. A metal may pertain-to a nation.Logical formLearned from13 sentences. Metals can be imperfect.Logical formLearned from13 sentences.