Natural Products Ontology	ZonMW COVID-19	Source
http://purl.org/zonmw/covid19/10183	http://www.owl-ontologies.com/NPOntology.owl#RNA	LOOM
http://purl.org/zonmw/covid19/10170	http://www.owl-ontologies.com/NPOntology.owl#CellLine	LOOM
http://purl.org/zonmw/covid19/10184	http://www.owl-ontologies.com/NPOntology.owl#Protein	LOOM