What is on the pole made of metal?
The street sign is on the pole.
     src        edge_attr  dst
0      1  to the right of   28
1      1   to the left of   26
2      1  to the right of    3
3      1   to the left of   29
4      1   to the left of   27
..   ...              ...  ...
298   47   to the left of   22
299   47  to the right of   17
300   47  to the right of   41
301   47  to the right of   33
302   47   to the left of   20

[303 rows x 3 columns]