A creature can be extraterrestrial.Logical formLearned from22 sentences. Phenomena can be extraterrestrial.Logical formLearned from21 sentences. Organisms can be extraterrestrial.Logical formLearned from21 sentences. Constants can be extraterrestrial.Logical formLearned from21 sentences. Communication can be with extraterrestrial intelligence.Logical formLearned from20 sentences. Contact can be with extraterrestrial civilizations.Logical formLearned from20 sentences. Visits can be extraterrestrial.Logical formLearned from20 sentences. An extraterrestrial civilization can be advanced.Logical formLearned from19 sentences. Vehicles can be extraterrestrial.Logical formLearned from19 sentences. A force can be extraterrestrial.Logical formLearned from19 sentences. A planet can be extraterrestrial.Logical formLearned from19 sentences. Dust can be extraterrestrial.Logical formLearned from18 sentences. An influence can be extraterrestrial.Logical formLearned from18 sentences. A search can be extraterrestrial.Logical formLearned from18 sentences. Contacts can be extraterrestrial.Logical formLearned from18 sentences.