How is the vehicle to the left of the man that wears a shirt called?
The vehicle is a train.
    src        edge_attr  dst
0     0   to the left of   17
1     0   to the left of   10
2     1  to the right of   11
3     1   to the left of    4
4     2         watching    4
5     2  to the right of    3
6     2          wearing   19
7     2   to the left of    4
8     3   to the left of    2
9     3   to the left of    4
10    3   to the left of   19
11    3   to the left of   16
12    4   to the left of    7
13    4   to the left of   13
14    4   to the left of    5
15    4   to the left of    9
16    4  to the right of    1
17    4   to the left of   17
18    4  to the right of    2
19    4  to the right of    3
20    4   to the left of   10
21    4  to the right of   11
22    4  to the right of   15
23    4   to the left of   14
24    4  to the right of   19
25    5  to the right of   10
26    5  to the right of    4
27    6   to the left of   17
28    6   to the left of   14
29    6   to the left of   10
30    7  to the right of    4
31    9          wearing    5
32    9  to the right of   13
33    9  to the right of    4
34    9  to the right of   10
35    9  to the right of   14
36   10          holding   17
37   10  to the right of    4
38   10  to the right of    0
39   10   to the left of    5
40   10  to the right of    6
41   10   to the left of    9
42   11   to the left of    4
43   11   to the left of    1
44   13  to the right of    4
45   13   to the left of    9
46   14   to the left of    9
47   14  to the right of    6
48   14  to the right of    4
49   15   to the left of    4
50   15   to the left of   20
51   16  to the right of    3
52   16  to the right of   19
53   17  to the right of    0
54   17  to the right of    4
55   17  to the right of    6
56   19   to the left of   16
57   19   to the left of    4
58   19  to the right of    3
59   20  to the right of   15