Rocks may be formed from tissues of organisms.Logical formLearned from12 sentences. A rock may contain remains of human ancestors.Logical formLearned from12 sentences. A direction of needles may give an age to a rock.Logical formLearned from12 sentences. A camera may distinguish some (rock types).Logical formLearned from12 sentences. A ratio may pertain-to a rock.Logical formLearned from12 sentences. A pattern can be in rock.Logical formLearned from12 sentences. A protofungus may break_up rock.Logical formLearned from12 sentences. A person may learn about a rock.Logical formLearned from12 sentences. Voices may pertain-to rock.Logical formLearned from12 sentences. Rocks can be at a surface.Logical formLearned from12 sentences. Persons may find a rock.Logical formLearned from12 sentences. A position may pertain-to rocks.Logical formLearned from12 sentences. Rocks may be thrown.Logical formLearned from12 sentences. Fields can be constituted-of-or-filled-with rocks.Logical formLearned from12 sentences. A point may pertain-to a rock.Logical formLearned from12 sentences.