Is the lamp on the right side?
No, the lamp is on the left of the image.
    src        edge_attr  dst
0     0   to the left of    1
1     0               on   11
2     1  to the right of    6
3     1  to the right of    9
4     1  to the right of    0
5     1  to the right of   11
6     4  to the right of    7
7     4               by    9
8     5  to the right of    7
9     6   to the left of    1
10    7   to the left of    4
11    7   to the left of    5
12    8  to the right of    9
13    8  to the right of   11
14    9   to the left of    8
15    9   to the left of    1
16   10               on    4
17   11   to the left of    1
18   11   to the left of    8