Extraterrestrial intelligence can be at_home.Logical formLearned from2 sentences. A (planetary ice) can be extraterrestrial.Logical formLearned from2 sentences. Extraterrestrial life may undergo expositions.Logical formLearned from2 sentences. Gasses can be extraterrestrial.Logical formLearned from2 sentences. Extraterrestrial life can be in a meteorite.Logical formLearned from2 sentences. Wonders can be extraterrestrial.Logical formLearned from2 sentences. A (tell-tale sign) can be constituted-of-or-filled-with extraterrestrial life.Logical formLearned from2 sentences. A preponderance of acids can be a (tell-tale sign) of extraterrestrial life.Logical formLearned from2 sentences. An infall can be extraterrestrial.Logical formLearned from2 sentences. Persons may debate a question of extraterrestrial intelligence.Logical formLearned from2 sentences. Extraterrestrial visitors can be on an airline.Logical formLearned from2 sentences. Signals can be from an extraterrestrial civilization.Logical formLearned from2 sentences. (Candidate signals) can be from extraterrestrial civilizations.Logical formLearned from2 sentences. An army can be extraterrestrial.Logical formLearned from2 sentences. Clouds can be extraterrestrial.Logical formLearned from2 sentences.