$title = CRM_Contact_BAO_Contact::displayName($relationship->contact_id_a) . ' (' . CRM_Core_DAO::getFieldValue('CRM_Contact_DAO_RelationshipType',
$relationship->relationship_type_id, 'label_a_b'
) . ' ' . CRM_Contact_BAO_Contact::displayName($relationship->contact_id_b) . ')';
$title = CRM_Contact_BAO_Contact::displayName($relationship->contact_id_a) . ' (' . CRM_Core_DAO::getFieldValue('CRM_Contact_DAO_RelationshipType',
$relationship->relationship_type_id, 'label_a_b'
) . ' ' . CRM_Contact_BAO_Contact::displayName($relationship->contact_id_b) . ')';