What place does this represent?
It represents the yard.
     src        edge_attr  dst
0      0               by    1
1      0  to the right of   10
2      0  to the right of    7
3      0  to the right of   14
4      0  to the right of   11
..   ...              ...  ...
131   27  to the right of   17
132   27  to the right of   24
133   28   to the left of   12
134   28   to the left of   17
135   28   to the left of   23

[136 rows x 3 columns]