About: http://webisa.webdatacommons.org/87367239

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Silk is the strongest natural material known to man, and here Sir David compares it to steel wire and puts its tensile strength to test.
http://www.w3.org/ns/prov#wasQuotedFrom	uktv.co.uk