Do you see any lamps?
Yes, there is a lamp.
    src        edge_attr  dst
0     0               on   10
1     0   to the left of    3
2     0   to the left of    4
3     2               at    1
4     2   to the left of   10
5     3   to the left of    7
6     3  to the right of    6
7     3   to the left of    5
8     3  to the right of    0
9     4   to the left of    7
10    4   to the left of    5
11    4  to the right of    6
12    4  to the right of    0
13    5  to the right of    8
14    5  to the right of    4
15    5  to the right of   11
16    5  to the right of    9
17    5  to the right of    3
18    6   to the left of    4
19    6   to the left of    8
20    6   to the left of    3
21    7  to the right of    4
22    7  to the right of    3
23    8  to the right of    6
24    8   to the left of    5
25    9   to the left of    5
26    9               in    8
27   10   to the left of   11
28   10  to the right of    2
29   11   to the left of    5
30   11  to the right of   10