Which place is it?
It is a train station.
    src        edge_attr  dst
0     0   to the left of   12
1     1   to the left of    2
2     1       sitting on    4
3     1   to the left of   11
4     1               in    4
5     2  to the right of    1
6     2               in    4
7     3  to the right of   10
8     3   to the left of   17
9     4  to the right of   15
10    4  to the right of   16
11    4  to the right of    8
12    4  to the right of    5
13    4  to the right of    6
14    5   to the left of    4
15    5   to the left of   10
16    6      waiting for    4
17    6   to the left of   10
18    6   to the left of    4
19    8   to the left of   10
20    8   to the left of    4
21   10  to the right of    5
22   10   to the left of    3
23   10  to the right of    6
24   10  to the right of    8
25   10   to the left of   17
26   10  to the right of   16
27   10   to the left of   11
28   11          wearing   17
29   11  to the right of    1
30   11  to the right of   10
31   11          wearing    0
32   12  to the right of    0
33   15               of    6
34   15   to the left of    4
35   16   to the left of    4
36   16   to the left of   10
37   17  to the right of   10
38   17  to the right of    3