What's on the fire hydrant?
The nut is on the hydrant.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of    7
2     0   to the left of    5
3     0   to the left of    9
4     0   to the left of   16
..  ...              ...  ...
82   16  to the right of   15
83   17  to the right of    4
84   17  to the right of   15
85   17  to the right of    0
86   17  to the right of    6

[87 rows x 3 columns]