Is there a yellow signal light or fire hydrant?
No, there is a fire hydrant but it is gray.
    src        edge_attr  dst
0     0  to the right of   12
1     0  to the right of    8
2     1   to the left of    6
3     1           behind   10
4     2   to the left of    6
5     3  to the right of    8
6     4  to the right of   12
7     4  to the right of    5
8     4               on   13
9     4  to the right of   11
10    4  to the right of    9
11    5   to the left of    4
12    5   to the left of    7
13    5   to the left of    6
14    5   to the left of   11
15    5   to the left of    9
16    6  to the right of    5
17    6  to the right of    1
18    6  to the right of   12
19    6  to the right of   10
20    6  to the right of    2
21    7  to the right of   12
22    7  to the right of    5
23    7  to the right of    9
24    7  to the right of   11
25    8   to the left of    3
26    8   to the left of    0
27    9   to the left of    4
28    9  to the right of   12
29    9   to the left of    7
30    9  to the right of    5
31   10   to the left of    6
32   10      in front of    1
33   11  to the right of   12
34   11   to the left of    4
35   11   to the left of    7
36   11  to the right of    5
37   12   to the left of    0
38   12   to the left of    7
39   12   to the left of    9
40   12   to the left of    4
41   12   to the left of    6
42   12   to the left of   11
43   12   to the left of   13
44   13  to the right of   12