sub:assertion {
  sub:DAGs a fip:Available-FAIR-Enabling-Resource , fip:FAIR-Enabling-Resource , fip:Metadata-data-linking-schema ;
    rdfs:comment "A directed acyclic graph (DAG) is an acyclic graph that consists of vertices and edges (also called arcs), with each edge directed from one vertex to another, such that following those directions will never form a closed loop. A path in a DAG is a sequence of edges having the property that the ending vertex of each edge in the sequence is the same as the starting vertex of the next edge in the sequence; a path forms a cycle if the starting vertex of its first edge equals the ending vertex of its last edge" ;
    rdfs:label "Directed Acyclic Graphs" ;
    rdfs:seeAlso <https://en.wikipedia.org/wiki/Directed_acyclic_graph> .
}