(subclass Radium ElementalSubstance)	Mid-level-ontology.kif 28791-28791	Radium is a subclass of elemental substance
(subclass Radon ElementalSubstance)	Mid-level-ontology.kif 28757-28757	Radon is a subclass of elemental substance
(subclass Rhenium ElementalSubstance)	Mid-level-ontology.kif 28550-28550	Rhenium is a subclass of elemental substance
(subclass Rhodium ElementalSubstance)	Mid-level-ontology.kif 28013-28013	Rhodium is a subclass of elemental substance
(subclass Rubidium ElementalSubstance)	Mid-level-ontology.kif 27871-27871	Rubidium is a subclass of elemental substance
(subclass Ruthenium ElementalSubstance)	Mid-level-ontology.kif 27997-27997	Ruthenium is a subclass of elemental substance
(subclass Samarium ElementalSubstance)	Mid-level-ontology.kif 28316-28316	Samarium is a subclass of elemental substance
(subclass Scandium ElementalSubstance)	Mid-level-ontology.kif 27602-27602	Scandium is a subclass of elemental substance
(subclass Selenium ElementalSubstance)	Mid-level-ontology.kif 27820-27820	Selenium is a subclass of elemental substance
(subclass Silicon ElementalSubstance)	Mid-level-ontology.kif 27491-27491	Silicon is a subclass of elemental substance
(subclass Silver ElementalSubstance)	Mid-level-ontology.kif 28044-28044	Silver is a subclass of elemental substance
(subclass Sodium ElementalSubstance)	Mid-level-ontology.kif 27439-27439	Sodium is a subclass of elemental substance
(subclass Strontium ElementalSubstance)	Mid-level-ontology.kif 27888-27888	Strontium is a subclass of elemental substance
(subclass SubatomicParticle ElementalSubstance)	Merge.kif 1133-1133	Subatomic particle is a subclass of elemental substance
(subclass Sulphur ElementalSubstance)	Mid-level-ontology.kif 27523-27523	Sulphur is a subclass of elemental substance
(subclass Tantalum ElementalSubstance)	Mid-level-ontology.kif 28517-28517	Tantalum is a subclass of elemental substance
(subclass Technetium ElementalSubstance)	Mid-level-ontology.kif 27978-27978	Technetium is a subclass of elemental substance
(subclass Tellurium ElementalSubstance)	Mid-level-ontology.kif 28124-28124	Tellurium is a subclass of elemental substance
(subclass Terbium ElementalSubstance)	Mid-level-ontology.kif 28370-28370	Terbium is a subclass of elemental substance
(subclass Thallium ElementalSubstance)	Mid-level-ontology.kif 28667-28667	Thallium is a subclass of elemental substance
(subclass Thorium ElementalSubstance)	Mid-level-ontology.kif 28825-28825	Thorium is a subclass of elemental substance
(subclass Thulium ElementalSubstance)	Mid-level-ontology.kif 28448-28448	Thulium is a subclass of elemental substance
(subclass Tin ElementalSubstance)	Mid-level-ontology.kif 28091-28091	Tin is a subclass of elemental substance
(subclass Titanium ElementalSubstance)	Mid-level-ontology.kif 27618-27618	Titanium is a subclass of elemental substance
(subclass Tungsten ElementalSubstance)	Mid-level-ontology.kif 28534-28534	Tungsten is a subclass of elemental substance
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