Map related concept or collection, leaving out the relations.

    :param c: the concept or collection to map
    :param string language: Language to render the relation's label in
    :rtype: :class:`dict`

def _map_relation(c, language='any'):
    """
    Map related concept or collection, leaving out the relations.

    :param c: the concept or collection to map
    :param string language: Language to render the relation's label in
    :rtype: :class:`dict`
    """
    label = c.label(language)
    return {
        'id': c.id,
        'type': c.type,
        'uri': c.uri,
        'label': label.label if label else None
    }