Are there any yellow fire hydrants or traffic lights?
No, there is a fire hydrant but it is red.
    src        edge_attr  dst
0     0   on the side of   12
1     0   to the left of   12
2     1  to the right of    8
3     1  to the right of    7
4     1  to the right of    5
5     2  to the right of    5
6     2  to the right of    7
7     2  to the right of    6
8     3   to the left of    7
9     4  to the right of   12
10    5   to the left of    2
11    5   to the left of    1
12    5   to the left of    9
13    6   to the left of    2
14    6  to the right of   12
15    7  to the right of    3
16    7   to the left of    2
17    7   to the left of    1
18    7   to the left of    9
19    8        on top of    1
20    8   to the left of    1
21    8   to the left of    9
22    9  to the right of    5
23    9  to the right of    7
24    9  to the right of    8
25    9       walking on    1
26   10        on top of    5
27   10   to the left of   12
28   11   to the left of   12
29   12  to the right of   11
30   12  to the right of    0
31   12   to the left of    6
32   12   to the left of    4
33   12  to the right of   10