What is on the wall?
The clock is on the wall.
    src        edge_attr  dst
0     0            under   10
1     0   to the left of    5
2     0            below   10
3     1   to the left of   18
4     2  to the right of   15
..  ...              ...  ...
95   20   to the left of    6
96   20   to the left of    8
97   20  to the right of   18
98   21  to the right of    8
99   23   to the left of    3

[100 rows x 3 columns]