<http://schema.org/Mass>	<http://www.w3.org/2000/01/rdf-schema#comment>	"Properties that take Mass as values are of the form '&lt;Number&gt; &lt;Mass unit of measure&gt;'. E.g., '7 kg'." .
<http://schema.org/Mass>	<http://www.w3.org/2000/01/rdf-schema#label>	"Mass" .
<http://schema.org/Mass>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://schema.org/Quantity> .
<http://schema.org/Mass>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2000/01/rdf-schema#Class> .