Which place is it?
It is a runway.
    src        edge_attr  dst
0     1   to the left of    6
1     2   to the left of    7
2     2  to the right of    8
3     4  to the right of    5
4     4  to the right of   13
5     5   to the left of    4
6     6  to the right of    1
7     7  to the right of    8
8     7  to the right of    2
9     8   to the left of    2
10    8   to the left of    7
11    9   to the left of   11
12    9   to the left of   10
13    9   to the left of   13
14    9   to the left of   14
15   10   to the left of   13
16   10  to the right of    9
17   11  to the right of    9
18   11   to the left of   13
19   13  to the right of    9
20   13  to the right of   10
21   13  to the right of   11
22   13   to the left of    4
23   14  to the right of    9