What is tied to the pole?
The balloons are tied to the pole.
     src        edge_attr  dst
0      1   to the left of   18
1      1   to the left of   17
2      2   to the left of    9
3      2   to the left of   26
4      2   to the left of    8
..   ...              ...  ...
130   26   to the left of   20
131   26   to the left of    9
132   26  to the right of   15
133   26  to the right of    4
134   26  to the right of    3

[135 rows x 3 columns]