Is the man to the left or to the right of the curtain on the right?
The man is to the left of the curtain.
     src        edge_attr  dst
0      0  to the right of    2
1      0  to the right of   19
2      0  to the right of   16
3      0  to the right of   21
4      0  to the right of    1
..   ...              ...  ...
117   21   to the left of    1
118   21   to the left of    2
119   21  to the right of   18
120   21   to the left of   19
121   21  to the right of   17

[122 rows x 3 columns]