IPTC - International Press Telecommunications Council, 20 Garrick Street, London WC2E 9BT, UK Copyright 2013, IPTC, www.iptc.org, All Rights Reserved 2013-05-20T11:13:53+02:00 2008-02-29T12:00:00+00:00 2008-01-29T01:00:23+01:00 Value is an ancestor of an existing one Property value is an ancestor of another property value already assigned to the content Value relates directly to content Property value is directly extracted from the content by a tool and/or by a person Value was derived by look-up Property value was derived by look-up in a taxonomy/database