On which side is the lamp, the left or the right?
The lamp is on the left of the image.
    src        edge_attr  dst
0     0               on    1
1     0   to the left of   11
2     1  to the right of   14
3     2  to the right of   17
4     3  to the right of   17
..  ...              ...  ...
58   17   to the left of    5
59   17   to the left of    2
60   17   to the left of    7
61   17   to the left of    6
62   17   to the left of   15

[63 rows x 3 columns]