What vehicle is the man on?
The man is on the van.
     src        edge_attr  dst
0      0          wearing    4
1      0          holding   14
2      0   to the left of   14
3      0   to the left of   13
4      0   to the left of   19
..   ...              ...  ...
98    20  to the right of   15
99    20  to the right of   10
100   20  to the right of   13
101   21   to the left of    1
102   21   to the left of    9

[103 rows x 3 columns]