Mysteries may be revealed.Logical formLearned from13 sentences. A mystery may pertain-to mountains.Logical formLearned from13 sentences. A mystery may pertain-to the future.Logical formLearned from13 sentences. A mystery can be hard-boiled.Logical formLearned from13 sentences. Mysteries can be unanswered.Logical formLearned from13 sentences. A source can be a mystery.Logical formLearned from13 sentences. A mystery may pertain-to a trinity.Logical formLearned from13 sentences. (Mystery bird) may identify a bird.Logical formLearned from13 sentences. A male may delve into a mystery.Logical formLearned from13 sentences. (Mystery writers) may pertain-to a person.Logical formLearned from13 sentences. A mystery can be obvious.Logical formLearned from13 sentences. A mystery can be profound.Logical formLearned from13 sentences. Domains can be constituted-of-or-filled-with mystery.Logical formLearned from13 sentences. A mystery can be sexy.Logical formLearned from13 sentences. A person can be a (mystery fan).Logical formLearned from13 sentences.