What is on the wall?
The painting is on the wall.
     src        edge_attr  dst
0      0   to the left of   18
1      0  to the right of    1
2      1   to the left of   18
3      1               on    0
4      1   to the left of    7
..   ...              ...  ...
106   22  to the right of    9
107   22  to the right of    5
108   22  to the right of   13
109   22  to the right of    4
110   22  to the right of    3

[111 rows x 3 columns]