[fix] rdf/vocabs required_label (#4047)
[fix] rdf/vocabs required_label (#4047)


sunny4381/shirasagi,sunny4381/shirasagi,ShinjiTanimoto/shirasagi,shirasagi/shirasagi,sunny4381/shirasagi,shirasagi/shirasagi,shirasagi/shirasagi,ShinjiTanimoto/shirasagi,sunny4381/shirasagi,shirasagi/shirasagi,ShinjiTanimoto/shirasagi,ShinjiTanimoto/shirasagi