A fan can be constituted-of-or-filled-with hard rock.Logical formLearned from19 sentences. (Waste rock) may exceed (government standards).Logical formLearned from19 sentences. Rocks may be thrown by protesters.Logical formLearned from19 sentences. Rocks may be thrown by protesters.Logical formLearned from19 sentences. Figures may pertain-to rock.Logical formLearned from19 sentences. Streets may be littered with rocks.Logical formLearned from19 sentences. Youths may throw rocks.Logical formLearned from19 sentences. A mix can be constituted-of-or-filled-with alternative rock.Logical formLearned from19 sentences. Some youths may throw rocks.Logical formLearned from19 sentences. A rock can be mixed.Logical formLearned from19 sentences. Heaps can be constituted-of-or-filled-with rocks.Logical formLearned from19 sentences. (Rock fragments) can be hot.Logical formLearned from19 sentences. A (suicide attack) can be at a (rock concert).Logical formLearned from19 sentences. Roots may pertain-to rock.Logical formLearned from19 sentences. Rocks may pertain-to a weekday.Logical formLearned from18 sentences.