Are the people on the left or on the right?
The people are on the left of the image.
   src        edge_attr  dst
0    0   to the left of    2
1    0        on top of    1
2    0  to the right of    3
3    1  to the right of    3
4    2        on top of    1
5    2  to the right of    0
6    3   to the left of    0
7    3   to the left of    1