Is there either a truck or a bus in this photograph?
Yes, there is a bus.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    2
2     0  to the right of   17
3     0  to the right of    8
4     0  to the right of   10
..  ...              ...  ...
76   17   to the left of    2
77   17   to the left of    9
78   17  to the right of    5
79   17  to the right of    8
80   17   to the left of   13

[81 rows x 3 columns]