Are the desk and the floor made of the same material?
Yes, both the desk and the floor are made of wood.
    src        edge_attr  dst
0     0               in   10
1     0   to the left of   12
2     0  to the right of    7
3     1            above   14
4     1   to the left of    5
..  ...              ...  ...
65   16            above    6
66   16  to the right of   17
67   17   to the left of    5
68   17   to the left of   16
69   17   to the left of    2

[70 rows x 3 columns]