sedimentary stone can be changed into metamorphic stone
metamorphic_rock is rock. metamorphic_rock is not stone. sedimentary_rock is stone. slate is metamorphic_rock. gneiss is not metamorphic_rock. metamorphic_rock is not rock. gneiss is metamorphic_rock. metamorphic_rock is stone. slate is not metamorphic_rock. sedimentary_rock is not stone.