Which place is it?
It is a field.
    src        edge_attr  dst
0     1   to the left of   18
1     2               on    3
2     2          holding   13
3     5   to the left of    7
4     5   to the left of   18
..  ...              ...  ...
59   19   to the left of    5
60   19   to the left of    7
61   19  to the right of   17
62   19   to the left of   11
63   19   to the left of   18

[64 rows x 3 columns]