Is the shelf to the left or to the right of the shower curtain?
The shelf is to the left of the shower curtain.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    4
2     0   to the left of   13
3     1               on    0
4     1   to the left of    4
..  ...              ...  ...
76   14  to the right of    5
77   15   to the left of    4
78   15   to the left of    7
79   15   to the left of   13
80   15   to the left of   11

[81 rows x 3 columns]