An area can be alien.Logical formLearned from9 sentences. A minority can be alien.Logical formLearned from8 sentences. A facehugger can be alien.Logical formLearned from8 sentences. A planetoid can be alien.Logical formLearned from8 sentences. A (registration system) can be alien.Logical formLearned from8 sentences. A rebel can be alien.Logical formLearned from8 sentences. A secret can be alien.Logical formLearned from8 sentences. An alien invasion can be from the moon.Logical formLearned from8 sentences. Contact can be with an alien race.Logical formLearned from8 sentences. Grass can be alien.Logical formLearned from8 sentences. A contamination can be alien.Logical formLearned from8 sentences. Tentacles can be alien.Logical formLearned from8 sentences. Reports can be constituted-of-or-filled-with alien abductions.Logical formLearned from8 sentences. An incident can be alien.Logical formLearned from8 sentences. Evidence can be alien.Logical formLearned from8 sentences.