Are the tiles made of stone or marble?
The tiles are made of marble.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   13
2     0            above    8
3     0  to the right of    5
4     0  to the right of   12
..  ...              ...  ...
58   14   to the left of    4
59   14   to the left of    6
60   15   to the left of   12
61   15   to the left of    5
62   15   to the left of   14

[63 rows x 3 columns]