Is the boy to the left of the train?
Yes, the boy is to the left of the train.
     src        edge_attr  dst
0      0  to the right of   13
1      0   to the left of   21
2      0   to the left of    4
3      1  to the right of   10
4      1   to the left of    4
..   ...              ...  ...
97    23   to the left of    8
98    23   to the left of    4
99    24   to the left of   16
100   24   to the left of   21
101   24   to the left of    5

[102 rows x 3 columns]