An address can be extraterrestrial.Logical formLearned from2 sentences. Scientists may search for signs of extraterrestrial life.Logical formLearned from2 sentences. Extraterrestrial beings may study a race.Logical formLearned from2 sentences. Persons may be visited by extraterrestrial beings.Logical formLearned from2 sentences. A planet may be visited by extraterrestrial beings.Logical formLearned from2 sentences. Flying saucers can be extraterrestrial.Logical formLearned from2 sentences. A (fossil record) can be extraterrestrial.Logical formLearned from2 sentences. An archaeologist can be extraterrestrial.Logical formLearned from2 sentences. Components can be extraterrestrial.Logical formLearned from2 sentences. Indicators can be constituted-of-or-filled-with extraterrestrial life.Logical formLearned from2 sentences. Extraterrestrial intelligence may undergo a detection.Logical formLearned from2 sentences. A tongue can be extraterrestrial.Logical formLearned from2 sentences. Discoveries can be extraterrestrial.Logical formLearned from2 sentences. A liaison can be extraterrestrial.Logical formLearned from2 sentences. A calamity can be extraterrestrial.Logical formLearned from2 sentences.