Crystals can be coarse.Logical formLearned from28 sentences. A (crystal globe) may pertain-to a male.Logical formLearned from28 sentences. Crystals may undergo a formation.Logical formLearned from27 sentences. A crystal can be constituted-of-or-filled-with some miles.Logical formLearned from27 sentences. Crystals may undergo a production.Logical formLearned from27 sentences. Pieces can be constituted-of-or-filled-with crystal.Logical formLearned from27 sentences. Crystals can be purple.Logical formLearned from26 sentences. A structure may pertain-to crystals.Logical formLearned from26 sentences. Crystals may be formed.Logical formLearned from26 sentences. Atoms can be in a crystal.Logical formLearned from26 sentences. Crystals can be hard.Logical formLearned from26 sentences. A crystal can be magical.Logical formLearned from26 sentences. Crystals can be well-formed.Logical formLearned from26 sentences. A shape may pertain-to crystals.Logical formLearned from26 sentences. A person may look into a (crystal ball).Logical formLearned from26 sentences.