Where in this picture is the plastic helmet, on the left or on the right?
The helmet is on the right of the image.
     src        edge_attr  dst
0      0   to the left of   13
1      0   to the left of    2
2      1  to the right of   15
3      1  to the right of   10
4      2   to the left of    4
..   ...              ...  ...
98    18  to the right of    2
99    18  to the right of    4
100   18  to the right of   13
101   20   to the left of    2
102   20   to the left of   11

[103 rows x 3 columns]