| http://www.w3.org/ns/prov#value | - Some time ago, Unisys sent a royalty claim to Compuserve (inventors of GIF) based on the GIF format's usage of their patented LZW algorithm (why it is possible to patent algorithms is a mystery - maths should not be patentable) who then, having no other way to pay the outrageous amount, began claiming royalties for any use of GIF images on the internet.
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