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