Table 3.

The results in number of statements used for reasoning at three stages of the analysis: the original ontologies, after selecting triples necessary for the reasoning rules, and for the statements about the cultural heritage objects.

Ontology	Original size	Subset for rules	Subset for reasoning on an RDF resource (average per RDF resource)
Wikidata	unknown (latest dump file in Turtle format has 16 GB compressed)	3,010,212 (3,009,062 about classes plus 1,150 about properties)	256.9 ± 73.4
Schema.org	29.715	984	12.8 ± 5.3
OWL	450	6	2.0 ± 0.1
Total RDF statements	Unknown	3,011,202	271.8 ± 77.4