Threat may undergo a perception.Logical formLearned from92 sentences. A US-city may undergo a perception.Logical formLearned from92 sentences. Security may undergo a perception.Logical formLearned from91 sentences. Perceptions may pertain-to users.Logical formLearned from90 sentences. A perception may pertain-to an individual.Logical formLearned from90 sentences. A need may undergo a perception.Logical formLearned from90 sentences. Perceptions can be held.Logical formLearned from90 sentences. A perception may pertain-to windows.Logical formLearned from89 sentences. A US-president may undergo a perception.Logical formLearned from89 sentences. A perception can be in a country.Logical formLearned from88 sentences. A problem can be constituted-of-or-filled-with perception.Logical formLearned from88 sentences. Quality may undergo perceptions.Logical formLearned from88 sentences. A perception can be spiritual.Logical formLearned from87 sentences. A perception may pertain-to a user.Logical formLearned from87 sentences. A continent may undergo perceptions.Logical formLearned from86 sentences.