sentences: sedimentary messages are made of big conduction
docs: sedimentary is rock. arenaceous_rock is sedimentary_rock. sedimentary_clay is soil. etching is physical_information_bearing_object. limestone is sedimentary_rock. octahedron is regular_geometric_solid. sandstone is clastic_sedimentary_rock. clastic_sedimentary_rock is sedimentary_rock. sedimentary_rock is rock. sedimentary_rock is stone.