Emails can be periodic.Logical formLearned from85 sentences. A periodic comet can be in a solar system.Logical formLearned from84 sentences. A change can be periodic.Logical formLearned from84 sentences. Workshops can be periodic.Logical formLearned from83 sentences. Briefings can be periodic.Logical formLearned from83 sentences. Seminars can be periodic.Logical formLearned from83 sentences. (Status reports) can be periodic.Logical formLearned from82 sentences. Consultations can be periodic.Logical formLearned from81 sentences. A contact can be periodic.Logical formLearned from81 sentences. Breaks can be periodic.Logical formLearned from80 sentences. A series can be periodic.Logical formLearned from79 sentences. (Blood tests) can be periodic.Logical formLearned from78 sentences. A behavior can be periodic.Logical formLearned from77 sentences. Measurements can be periodic.Logical formLearned from76 sentences. A pattern can be periodic.Logical formLearned from75 sentences.