What is on the wall?
The letter is on the wall.
     src        edge_attr  dst
0      0               on   24
1      0   to the left of   27
2      0   to the left of    7
3      1   to the left of   17
4      1   to the left of   16
..   ...              ...  ...
242   39  to the right of   27
243   39  to the right of   29
244   39  to the right of   11
245   39  to the right of   32
246   39  to the right of   33

[247 rows x 3 columns]