What vehicle is to the right of the people on the sidewalk?
The vehicle is a bus.
    src        edge_attr  dst
0     0       walking on    2
1     0   to the left of    1
2     0   to the left of   13
3     0  to the right of   12
4     0   to the left of   10
5     1  to the right of    4
6     1  to the right of   16
7     1  to the right of    0
8     1  to the right of    7
9     1  to the right of    3
10    3   to the left of    1
11    4   to the left of    1
12    4   to the left of   11
13    4   to the left of   10
14    4   to the left of   13
15    6  to the right of   10
16    7   to the left of    1
17    9  to the right of   10
18    9  to the right of   14
19    9  to the right of   15
20   10  to the right of    0
21   10   to the left of    6
22   10  to the right of   12
23   10   to the left of    9
24   10  to the right of    4
25   10               on    2
26   11  to the right of    4
27   12   to the left of   13
28   12               on    4
29   12   to the left of   10
30   12   to the left of    0
31   12       walking on    2
32   13          wearing    3
33   13  to the right of   12
34   13  to the right of    4
35   13  to the right of   16
36   13          wearing    1
37   13  to the right of    0
38   13       walking on    2
39   14   to the left of    9
40   15   to the left of    9
41   16   to the left of   13
42   16   to the left of    1