What is in front of the tower?
The jet is in front of the tower.
    src        edge_attr  dst
0     0           behind    3
1     0  to the right of   16
2     0  to the right of    1
3     1         stuck on   16
4     1         stuck on    3
..  ...              ...  ...
58   20  to the right of    4
59   20   to the left of    2
60   20  to the right of   18
61   21               of    3
62   21   to the left of   11

[63 rows x 3 columns]