def is_relationship_object(brain_or_object):
if '<STR_LIT>' in get_path(brain_or_object):<EOL><INDENT>return True<EOL><DEDENT>return False<EOL>
Checks if the passed in brain or object is a relationship object

    :param brain_or_object: A single catalog brain or content object
    :return: True if the object is a relationship object