Substances may undergo a separation.Logical formLearned from7 sentences. (Substance abuse) may cause problems.Logical formLearned from7 sentences. A focus can be on substance.Logical formLearned from7 sentences. Kinds may undergo substances.Logical formLearned from7 sentences. Activities may undergo a substance.Logical formLearned from7 sentences. Substances may be involved.Logical formLearned from7 sentences. A substance can be for sale.Logical formLearned from7 sentences. A dream may undergo a substance.Logical formLearned from7 sentences. A substance may call.Logical formLearned from7 sentences. Substances can be harmful to an (ozone layer).Logical formLearned from7 sentences. A (substance abuse treatment) can be specialized.Logical formLearned from7 sentences. A substance may flow.Logical formLearned from7 sentences. A substance can be immutable.Logical formLearned from7 sentences. A spectrum can be constituted-of-or-filled-with substances.Logical formLearned from7 sentences. Substances may be released into blood by organs.Logical formLearned from7 sentences.