Are there both airplanes and trucks in this photo?
Yes, there are both an airplane and a truck.
   src        edge_attr  dst
0    0  to the right of    4
1    0   to the left of    1
2    1  to the right of    4
3    1  to the right of    0
4    4   to the left of    1
5    4   to the left of    0
6    4   to the left of    6
7    6  to the right of    4