PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In the case, for example of the 7/7 bombings, these were made of organic peroxides.Nail varnish remover, hair bleach, limescale remover, and you are pretty much done.(you can not make a bomb from these chemicals simply in the concentrations they are normally used at - but you can not tell from traces if peroxides are part of hair dye, or a bomb.)The reagents used to make ricin are similarly problematic
http://www.w3.org/ns/prov#wasQuotedFrom
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