Igneous rocks may undergo a classification.Logical formLearned from18 sentences. Igneous rocks can be basic.Logical formLearned from18 sentences. (Rock album) may pertain-to a year.Logical formLearned from18 sentences. Pyrotechnics may be used as a (stage prop) by some (rock band).Logical formLearned from18 sentences. A mob may throw rocks.Logical formLearned from18 sentences. A (rock quarry) may pertain-to a us-state.Logical formLearned from18 sentences. A (rock face) may drop.Logical formLearned from18 sentences. An arm can be to (sample surface rock).Logical formLearned from18 sentences. Rocks can be constituted-of-or-filled-with wood.Logical formLearned from18 sentences. An avalanche of rock may slam.Logical formLearned from18 sentences. A plume can be constituted-of-or-filled-with rock.Logical formLearned from18 sentences. Mountains can be constituted-of-or-filled-with rock.Logical formLearned from18 sentences. Rocks may be thrown by demonstrators.Logical formLearned from18 sentences. Rock may undergo a generation.Logical formLearned from18 sentences. Some persons may be injured by rocks.Logical formLearned from18 sentences.