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