What is on the wall?
The poster is on the wall.
     src        edge_attr  dst
0      0   to the left of   12
1      0   to the left of   21
2      0  to the right of   30
3      0   to the left of   22
4      0  to the right of   20
..   ...              ...  ...
332   33   to the left of   10
333   33   to the left of    9
334   33   to the left of   22
335   33   to the left of   23
336   34  to the right of   10

[337 rows x 3 columns]