Who is on the carriage?
The child is on the carriage.
     src        edge_attr  dst
0      0   to the left of   21
1      0   to the left of   19
2      2   to the left of    8
3      2   to the left of   31
4      2   to the left of   33
..   ...              ...  ...
162   33  to the right of   16
163   33  to the right of   21
164   33  to the right of   29
165   33  to the right of    7
166   33  to the right of    2

[167 rows x 3 columns]