On which side is the lamp?
The lamp is on the right of the image.
    src        edge_attr  dst
0     0   to the left of   13
1     1   to the left of    4
2     3   to the left of    6
3     4  to the right of    1
4     4  to the right of    7
5     4  to the right of    8
6     5   to the left of   12
7     6  to the right of    8
8     6   to the left of   12
9     6  to the right of    3
10    7   to the left of    4
11    8   to the left of    4
12    8   to the left of    6
13   11   to the left of   12
14   12  to the right of    6
15   12  to the right of   11
16   12  to the right of    5
17   13  to the right of    0
18   13               on    9