def get_downstream_causal_subgraph(graph, nbunch: Union[BaseEntity, Iterable[BaseEntity]]):
    """Induce a sub-graph from all of the downstream causal entities of the nodes in the nbunch.

    :type graph: pybel.BELGraph
    :rtype: pybel.BELGraph
    """
    return get_subgraph_by_edge_filter(graph, build_downstream_edge_predicate(nbunch))
Induce a sub-graph from all of the downstream causal entities of the nodes in the nbunch.

    :type graph: pybel.BELGraph
    :rtype: pybel.BELGraph