| ERROR | query constants not in the database; no rows selected |
| CAUSE | URIs or literals used in the query did not exist in the database. |
| ACTION | Check the query, and ensure that the URIs or literals do exist. |
| ERROR | query constants not in the database; no rows selected |
| CAUSE | URIs or literals used in the query did not exist in the database. |
| ACTION | Check the query, and ensure that the URIs or literals do exist. |