Which vehicle is gold, the bus or the fire truck?
The bus is gold.
    src        edge_attr  dst
0     1      in front of    6
1     2      in front of    7
2     2  to the right of    6
3     3      in front of    7
4     3  to the right of    6
5     4      in front of    6
6     5  to the right of    6
7     5  to the right of   12
8     6   to the left of    5
9     6   to the left of    3
10    6   to the left of    2
11    6   to the left of    9
12    6   to the left of    7
13    7  to the right of   12
14    7           inside    8
15    7  to the right of    6
16    7        parked in    8
17    7        parked on   10
18    7               in    8
19    7           behind    2
20    7            below    0
21    9  to the right of    6
22    9  on the front of    7
23   11      in front of    7
24   12   to the left of    7
25   12   to the left of    5