A riddle may be wrapped in an enigma.Logical formLearned from2 sentences. A doubt can be a riddle.Logical formLearned from2 sentences. Riddles can be short.Logical formLearned from2 sentences. An answer may pertain-to a riddle.Logical formLearned from2 sentences. A person may reduce a riddle to some sentences.Logical formLearned from2 sentences. An answer may lie in a riddle.Logical formLearned from2 sentences. Riddles can be medieval.Logical formLearned from2 sentences. A male may know a riddle.Logical formLearned from2 sentences. A riddle may pertain-to ice.Logical formLearned from2 sentences. A riddle of (ear training) may be found in an interval.Logical formLearned from2 sentences. A scientist may speak of a riddle of death.Logical formLearned from2 sentences. A book may be arranged upon a principle of a riddle.Logical formLearned from2 sentences. A riddle may pertain-to a political thought.Logical formLearned from2 sentences. A riddle can be for persons.Logical formLearned from2 sentences. A riddle can be from a mystery.Logical formLearned from2 sentences.