sentences: wood is a ergonal / ergonal matter insulator
docs: ventilation_shaft is inert_artifact. insulating_material is building_material. wood is non_fluidlike_substance. eastern_woodrat is wood_rat. electrical_insulator is insulating_medium. erodium_texanum is plant. insulation is insulating_material. vent is orifice. gametangium is reproductive_structure. insulator is material.