Where is the sign?
The sign is on the street.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of    5
2     1             near    6
3     1   to the left of    4
4     1   to the left of   10
5     2               on   13
6     2   to the left of   14
7     2  to the right of    6
8     3   to the left of    5
9     3  to the right of    6
10    3   to the left of   12
11    4             near    5
12    4  to the right of    1
13    4   to the left of   15
14    4   to the left of    8
15    5           behind    7
16    5             near    4
17    5   to the left of   11
18    5  to the right of    3
19    5  to the right of   14
20    5   to the left of    0
21    6   to the left of   14
22    6             near    1
23    6   to the left of    2
24    6   to the left of    3
25    7      in front of    5
26    8  to the right of    4
27    8  to the right of    9
28    9   to the left of   11
29    9   to the left of    0
30    9   to the left of    8
31   10  to the right of    1
32   11  to the right of    5
33   11  to the right of    9
34   12  to the right of   14
35   12  to the right of    3
36   14   to the left of   12
37   14  to the right of    2
38   14  to the right of    6
39   14   to the left of    5
40   15  to the right of    4