Is there any hippo to the right of the train?
No, there is an elephant to the right of the train.
     src        edge_attr  dst
0      0          wearing    5
1      0          wearing   20
2      0  to the right of   17
3      0   to the left of   14
4      0   to the left of   26
..   ...              ...  ...
121   29  to the right of   24
122   29  to the right of   12
123   30  to the right of   28
124   30  to the right of   17
125   30   to the left of   27

[126 rows x 3 columns]