Is the ring on a street sign?
No, the ring is on a fire hydrant.
    src        edge_attr  dst
0     1               on   14
1     1    surrounded by   32
2     1      in front of   19
3     1      in front of   18
4     1               in    3
..  ...              ...  ...
71   31  to the right of   29
72   31  to the right of    7
73   31   to the left of    8
74   31   to the left of   15
75   31   to the left of   18

[76 rows x 3 columns]