Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Name | Location | Height Metres / feet | Floors |
| --- | --- | --- | --- | --- |
| 1.0 | Crystal Palace | Ljubljana | metres (ft) | 20 |
| 2.0 | World Trade Center Ljubljana | Ljubljana | metres (ft) | 18 |
| 3.0 | Tivolska 50 | Ljubljana | metres (ft) | 15 |
| 4.0 | Nebotičnik | Ljubljana | metres (ft) | 13 |
| 5.0 | TR3 | Ljubljana | metres (ft) | 17 |
| 5.0 | St. Joseph Church | Ljubljana | metres (ft) | N/A |
| 7.0 | UKC Maribor | Maribor | metres (ft) | 16 |
| 8.0 | Betnavski park | Maribor | metres (ft) | 3x17 |
| 8.0 | St. James Church | Ljubljana | metres (ft) | N/A |
| 10.0 | Eda center | Nova Gorica | metres (ft) | 15 |
| 11.0 | Metalka Building | Ljubljana | metres (ft) | 15 |
| 11.0 | TR2 | Ljubljana | metres (ft) | 12 |
| 13.0 | R5 | Ljubljana | metres (ft) | 17 |
| 14.0 | Franciscan Church | Maribor | metres (ft) | N/A |
| 15.0 | Maribor Cathedral | Maribor | metres (ft) | N/A |
Question:
Which Rank is the lowest one that has a Name of maribor cathedral?
Answer:
15.0