http://xmlns.com/foaf/0.1/topic

used by 23:

• agris
• aspire-bournemouth
• aspire-brunel
• aspire-harper-adams
• aspire-keele
• aspire-manchester
• aspire-mmu
• aspire-ntu
• aspire-roehampton
• aspire-st-andrews
• aspire-sussex
• aspire-ucl
• aspire-uclan
• linked-stockindex
• lod2
• prefix-cc
• randomnessguidelondon
• rdfize-lastfm
• rkb-explorer-webconf
• taxonconcept-assets
• taxonconcept-occurences
• totl-xkcd
• transparency-linked-data