def baseline_candidates(test_query_rel, edges, obj_dist, rel_obj_dist):
    """
    Define the answer candidates based on the object distribution as a simple baseline.

    Parameters:
        test_query_rel (int): test query relation
        edges (dict): edges from the data on which the rules should be learned
        obj_dist (dict): overall object distribution
        rel_obj_dist (dict): object distribution for each relation

    Returns:
        candidates (dict): candidates along with their distribution values
    """

    if test_query_rel in edges:
        candidates = rel_obj_dist[test_query_rel]
    else:
        candidates = obj_dist

    return candidates