Are there both a fire truck and an ambulance in this image?
No, there is a fire truck but no ambulances.
   src        edge_attr  dst
0    1   to the left of    3
1    2  to the right of    9
2    3  to the right of    1
3    3   to the left of    9
4    9   to the left of    2
5    9  to the right of    3