Is the happy boy to the right of a controller?
Yes, the boy is to the right of a controller.
    src        edge_attr  dst
0     0  to the right of   16
1     0  to the right of    5
2     0   to the left of   21
3     0   to the left of   20
4     1  to the right of    6
..  ...              ...  ...
70   21  to the right of   15
71   21          wearing   11
72   21          wearing    9
73   21  to the right of    2
74   22  to the right of    2

[75 rows x 3 columns]