What is the bus in front of?
The bus is in front of the gas station.
    src        edge_attr  dst
0     0      in front of    3
1     0   to the left of    4
2     0   to the left of    9
3     0   to the left of    7
4     0   to the left of    5
5     0   to the left of   11
6     0   to the left of    1
7     0   to the left of   10
8     1  to the right of   11
9     1  to the right of    8
10    1  to the right of    0
11    1  to the right of    4
12    3           beside    0
13    3  to the right of   13
14    3  to the right of   12
15    4  to the right of    0
16    4   to the left of    1
17    4  to the right of   11
18    4  to the right of    6
19    4  to the right of    8
20    4   to the left of    9
21    5  to the right of    0
22    5  to the right of    8
23    5               on    3
24    6   to the left of    4
25    6   to the left of    7
26    7  to the right of    0
27    7  to the right of    8
28    7  to the right of    6
29    8   to the left of    7
30    8   to the left of    5
31    8   to the left of   11
32    8   to the left of    1
33    8   to the left of    4
34    9  to the right of    4
35    9  to the right of    0
36    9           behind    3
37    9  to the right of   14
38   10  to the right of    0
39   10  to the right of   18
40   11      in front of    3
41   11   to the left of    4
42   11  to the right of    0
43   11   to the left of    1
44   11  to the right of    8
45   12   to the left of   14
46   12   to the left of    3
47   13   to the left of    3
48   14  to the right of   12
49   14   to the left of    9
50   16               on   15
51   18   to the left of   10