@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix obo_purl: <http://purl.obolibrary.org/obo/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix metadata_def: <http://data.bioontology.org/metadata/def/> .
@prefix ns0: <\u0022A\u0020unit\u0020which\u0020is\u0020a\u0020standard\u0020measure\u0020of\u0020the\u0020amount\u0020of\u0020matter/> .

obo_purl:UO_0000002
    metadata_def:mappingLoom "massunit" ;
    metadata_def:mappingSameURI obo_purl:UO_0000002 ;
    metadata_def:prefLabel "mass unit" ;
    a owl:Class ;
    rdfs:comment "\"A unit which is a standard measure of the amount of matter/energy of a physical object.\" [Wikipedia:Wikipedia]" ;
    rdfs:label "mass unit" ;
    rdfs:subClassOf obo_purl:UO_0000000 .

obo_purl:UO_0000055
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_0010009
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1000021
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1000221
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010031
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010032
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010033
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010034
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010035
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010036
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010037
    rdfs:subClassOf obo_purl:UO_0000002 .

obo_purl:UO_1010038
    rdfs:subClassOf obo_purl:UO_0000002 .