Which color is the shoe?
The shoe is gray.
    src        edge_attr  dst
0     0               on    4
1     0   to the left of    2
2     0   to the left of    1
3     0   to the left of    9
4     1  to the right of    2
..  ...              ...  ...
66   17   to the left of   10
67   17   to the left of   13
68   18  to the right of   15
69   18  to the right of   14
70   18  to the right of   11

[71 rows x 3 columns]