A ghost may pertain-to a smile.Logical formLearned from12 sentences. Persons can be a ghost.Logical formLearned from12 sentences. A (ghost train) may pertain-to a male.Logical formLearned from12 sentences. A (ghost fire) can be holy.Logical formLearned from12 sentences. A series can be constituted-of-or-filled-with (ghost stories).Logical formLearned from12 sentences. Ghosts may undergo a collection.Logical formLearned from12 sentences. A ghost may leave.Logical formLearned from12 sentences. Ghosts may undergo an invasion.Logical formLearned from12 sentences. (Ghost stories) may pertain-to a world-city.Logical formLearned from12 sentences. A ghost of a person may linger.Logical formLearned from12 sentences. A ghost may tell a male.Logical formLearned from12 sentences. A ghost may pertain-to a US-city.Logical formLearned from12 sentences. A ghost may be send_downed from heaven.Logical formLearned from12 sentences. A male may have a ghost.Logical formLearned from12 sentences. Ghosts may slow_down forces.Logical formLearned from12 sentences.