<http://ns.inria.fr/covid19/PMC7353620#title>	<http://purl.org/dc/terms/subject>	"Economics curves" .
<http://ns.inria.fr/covid19/PMC7353620#title>	<http://purl.org/dc/terms/subject>	"Meat by animal" .
<http://ns.inria.fr/covid19/PMC7353620#title>	<http://purl.org/dc/terms/subject>	"Lamb dishes" .
<http://ns.inria.fr/covid19/PMC7353620#title>	<http://purl.org/dc/terms/subject>	"Sheep" .
<http://ns.inria.fr/covid19/PMC7353620#title>	<http://purl.org/dc/terms/subject>	"Utility function types" .