What is the name of the sign that is white?
The sign is a street sign.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    2
2     0   to the left of   11
3     0   to the left of    9
4     2   to the left of    0
5     2   to the left of    9
6     2   to the left of   12
7     4  to the right of   11
8     4  to the right of    9
9     4  to the right of    7
10    4           behind    7
11    5   to the left of    0
12    5   to the left of    9
13    5   to the left of   12
14    5   to the left of   11
15    6  to the right of   11
16    6  to the right of    9
17    6  to the right of   13
18    7   to the left of    4
19    7      in front of   13
20    8  to the right of    9
21    8  to the right of   11
22    8  to the right of   13
23    9  to the right of    5
24    9   to the left of    8
25    9  to the right of   12
26    9   to the left of    6
27    9  to the right of    0
28    9  to the right of    2
29    9   to the left of    4
30   11   to the left of    6
31   11  to the right of   12
32   11   to the left of    4
33   11  to the right of    0
34   11  to the right of    5
35   11   to the left of    8
36   12   to the left of   11
37   12   to the left of    9
38   12  to the right of    2
39   12  to the right of    5
40   13   to the left of    6
41   13   to the left of    8
42   14               on   13