Mystery may undergo a denial.Logical formLearned from4 sentences. A mystery may pertain-to (gamma ray bursts).Logical formLearned from4 sentences. Mysteries can be about an evolution of a planet.Logical formLearned from4 sentences. Genes may remain a mystery.Logical formLearned from4 sentences. Mysteries may pertain-to a civilization.Logical formLearned from4 sentences. A (burial site) may remain a mystery.Logical formLearned from4 sentences. A subject of an extinction of species may be involved in a mystery.Logical formLearned from4 sentences. A mystery may pertain-to an atmosphere.Logical formLearned from4 sentences. A bird can be a mystery.Logical formLearned from4 sentences. A mystery may pertain-to a lot.Logical formLearned from4 sentences. A mystery may pertain-to a task.Logical formLearned from4 sentences. Mysteries can be transparent.Logical formLearned from4 sentences. A mystery may pertain-to a manner.Logical formLearned from4 sentences. A mystery may pertain-to smoke.Logical formLearned from4 sentences. Mystery may lie.Logical formLearned from4 sentences.