What is under the plate?
The mat is under the plate.
     src        edge_attr  dst
0      0  to the right of    4
1      1   to the left of   24
2      3   to the left of    8
3      3  to the right of   30
4      3   to the left of   25
..   ...              ...  ...
123   30   to the left of   27
124   30   to the left of   16
125   30   to the left of    3
126   30   to the left of    9
127   30   to the left of    7

[128 rows x 3 columns]