Duplication in result

[Pooya-Oladazimi]

Some of the results are duplicated. For example:

https://ts4nfdi-api-gateway.prod.km.k8s.zbmed.de/api-gateway/search?query=Assay&ontology=mesh,efo&type=class&collection=nfdi4health&fieldList=description,label,iri,ontology_name,type,short_form

this is duplicated:

iri	"http://purl.obolibrary.org/obo/NCIT_C60819"
backend_type	"ols"
short_form	"NCIT_C60819"
description	
0	"A qualitative or quantitative analysis performed to determine the amount of a particular constituent in a sample or the biological or pharmacological properties of a drug."
label	"Assay"
source	"https://service.tib.eu/ts4tib/api"
type	"class"
source_name	"tib"
ontology	"ncit"