An isotope can be long-lived.Logical formLearned from14 sentences. An isotope may undergo a decay.Logical formLearned from14 sentences. Some isotopes can be constituted-of-or-filled-with carbon.Logical formLearned from14 sentences. Isotopes may be used for medical treatments.Logical formLearned from14 sentences. Variety can be constituted-of-or-filled-with isotopes.Logical formLearned from13 sentences. A male may be promoted to isotopes.Logical formLearned from13 sentences. Some games can be for isotopes.Logical formLearned from13 sentences. Isotopes may undergo a synthesis.Logical formLearned from13 sentences. Isotopes can be with half-lives.Logical formLearned from13 sentences. Isotopes may undergo an analysis.Logical formLearned from13 sentences. Some isotopes can be radioactive.Logical formLearned from13 sentences. Isotopes can be constituted-of-or-filled-with lead.Logical formLearned from13 sentences. Atoms may pertain-to an isotope.Logical formLearned from13 sentences. An isotope can be constituted-of-or-filled-with element.Logical formLearned from13 sentences. A radioactive isotope can be rare.Logical formLearned from13 sentences.