Distinct subjects for predicate ns1:wasPerformedBy sorted by frequency

ResourceCount
<__http://purl.org/collections/nl/niod/botb_to_ner.ttl1>2
<__http://purl.org/collections/nl/niod/ner_loc_to_geonames_amb.ttl1>2
<__http://purl.org/collections/nl/niod/ner_loc_to_geonames.ttl1>2
<__http://purl.org/collections/nl/niod/ner_rest_to_niod.ttl1>2