| http://www.w3.org/ns/prov#value | - 20090030982METHODS AND SYSTEMS FOR SEMANTICALLY MANAGING OFFERS AND REQUESTS OVER A NETWORK - Among other disclosure, a knowledge network and semcards enabling intelligent matching of offers and requests, involving all types of information and knowledge, including information such as classified ads, data about products and services, or knowledge, expertise, ideas, suggestions, opinions, and other
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