Death may undergo perceptions.Logical formLearned from21 sentences. A war can be constituted-of-or-filled-with perceptions.Logical formLearned from21 sentences. A perception can be worse.Logical formLearned from21 sentences. Perception may undergo changes.Logical formLearned from20 sentences. An act can be constituted-of-or-filled-with perception.Logical formLearned from20 sentences. Perceptions can be emotional.Logical formLearned from20 sentences. Patterns can be constituted-of-or-filled-with perception.Logical formLearned from20 sentences. Effort may undergo a perception.Logical formLearned from20 sentences. Disability may undergo perceptions.Logical formLearned from20 sentences. Fatigue may undergo a perception.Logical formLearned from20 sentences. Needs may undergo perceptions.Logical formLearned from20 sentences. Differences can be in perceptions.Logical formLearned from20 sentences. A perception may be based.Logical formLearned from20 sentences. A system may undergo perceptions.Logical formLearned from20 sentences. A person may get a perception.Logical formLearned from20 sentences.