What is on the wall?
The picture is on the wall.
    src        edge_attr  dst
0     0   to the left of    5
1     1  to the right of   12
2     1               on    2
3     1       hanging on    2
4     2  to the right of    8
..  ...              ...  ...
89   21  to the right of   17
90   21   to the left of   13
91   21  to the right of   19
92   21   to the left of    2
93   21               of    7

[94 rows x 3 columns]