What is the color of the traffic light to the right of the traffic signal?
The traffic light is yellow.
    src        edge_attr  dst
0     0          holding   15
1     1   to the left of   16
2     1   to the left of   12
3     2  to the right of   11
4     2   to the left of   15
5     3  to the right of    4
6     4   to the left of    3
7     5  to the right of   15
8     7   to the left of   17
9     8   to the left of    9
10    9  to the right of   11
11    9  to the right of    8
12   11   to the left of   15
13   11   to the left of    9
14   11   to the left of    2
15   12  to the right of    1
16   12   to the left of   16
17   13   to the left of   14
18   14  to the right of   13
19   15  to the right of    2
20   15   to the left of    5
21   15  to the right of   11
22   16  to the right of   12
23   16  to the right of    1
24   17  to the right of    7