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Select the rock with the lighter color.
Select the rock with the lighter color.
Select the black mineral.
Select the rock with the lighter color.
Select the white mineral.
Select the rock with the lighter color.
Select the brown rock.
Select the rock with the lighter color.
Select the rock with the lighter color.
Select the light gray rock.
Select the one substance that is not a rock.
Select the one substance that is not a rock.