| http://www.w3.org/ns/prov#value | - he arcs that are part of a v-structure (a triplet of nodes incident on a converging connection, i.e., B???A???C), which is identified by the fact that the parent nodes are never independent given their child (i.e., B and C are dependent conditional on every subset S including A), and (iii) set the direction of the other arcs as needed to obtain a directed acyclic graph.
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