Who is walking in the ground?
The people are walking in the ground.
     src       edge_attr  dst
0      0  to the left of   20
1      0  to the left of   14
2      0  to the left of   26
3      0  to the left of    2
4      0  to the left of    4
..   ...             ...  ...
151   28  to the left of    2
152   28  to the left of    4
153   28  to the left of   20
154   28  to the left of   26
155   28  to the left of   21

[156 rows x 3 columns]