Who is in front of the wall?
The people are in front of the wall.
     src        edge_attr  dst
0      0  to the right of   28
1      0   to the left of   25
2      0  to the right of   35
3      0   to the left of   19
4      0   to the left of   21
..   ...              ...  ...
227   35   to the left of   14
228   35   to the left of   12
229   35   to the left of   10
230   35   to the left of    8
231   35   to the left of    0

[232 rows x 3 columns]