Lightning may discover that something-is-the-case.Logical formLearned from4 sentences. A foot can be on a kind of lightning.Logical formLearned from4 sentences. A lightning can be visible.Logical formLearned from4 sentences. A spot may be struck by lightning.Logical formLearned from4 sentences. A (lightning activity) can be high.Logical formLearned from4 sentences. A parallel can be between a spectrum of (lightning emissions).Logical formLearned from4 sentences. Lightning can be of interest to missions.Logical formLearned from4 sentences. A source may pertain-to a lightning.Logical formLearned from4 sentences. (Tephra clouds) may generate lightning.Logical formLearned from4 sentences. Seconds can be between a lightning.Logical formLearned from4 sentences. Persons may be treated to a (lightning display).Logical formLearned from4 sentences. A lightning may die.Logical formLearned from4 sentences. A person may see lightnings.Logical formLearned from4 sentences. A horse-chestnut may be struck by lightning.Logical formLearned from4 sentences. A flash of lightning may illuminate an object.Logical formLearned from4 sentences.