Does the boy to the left of the man observe a wolf?
No, the boy observes the elephant.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of   13
2     0   to the left of    1
3     0  to the right of   18
4     0   to the left of   15
..  ...              ...  ...
62   18   to the left of   15
63   18   to the left of    0
64   18   to the left of    6
65   18        observing   17
66   18   to the left of   12

[67 rows x 3 columns]